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Finding the Fourth Proportional to 9,381.75, 12,946.82 and 5,190.63

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Solution

The fourth proportional to 9,381.75, 12,946.82 and 5,190.63 is: 7,163.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,381.75 : 12,946.82 = 5,190.63 : x
  2. Step 2: Convert to fraction form
    9,381.75/12,946.82 = 5,190.63/x
  3. Step 3: Cross multiply
    9,381.75x = 12,946.82 × 5,190.63
  4. Step 4: Simplify right side
    9,381.75x = 67,202,152.30
  5. Step 5: Solve for x
    x = 67,202,152.30/9,381.75
  6. Step 6: Final answer
    x = 7,163.07

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