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Finding the Fourth Proportional to 8,788.91, 13,162.57 and 7,628.38

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Solution

The fourth proportional to 8,788.91, 13,162.57 and 7,628.38 is: 11,424.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.91 : 13,162.57 = 7,628.38 : x
  2. Step 2: Convert to fraction form
    8,788.91/13,162.57 = 7,628.38/x
  3. Step 3: Cross multiply
    8,788.91x = 13,162.57 × 7,628.38
  4. Step 4: Simplify right side
    8,788.91x = 100,409,033.76
  5. Step 5: Solve for x
    x = 100,409,033.76/8,788.91
  6. Step 6: Final answer
    x = 11,424.52

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