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Finding the Fourth Proportional to 15,766.68, 21,768.15 and 9,806.46

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Solution

The fourth proportional to 15,766.68, 21,768.15 and 9,806.46 is: 13,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.68 : 21,768.15 = 9,806.46 : x
  2. Step 2: Convert to fraction form
    15,766.68/21,768.15 = 9,806.46/x
  3. Step 3: Cross multiply
    15,766.68x = 21,768.15 × 9,806.46
  4. Step 4: Simplify right side
    15,766.68x = 213,468,492.25
  5. Step 5: Solve for x
    x = 213,468,492.25/15,766.68
  6. Step 6: Final answer
    x = 13,539.22

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