Finding the Fourth Proportional to 9,812.72, 14,702.76 and 5,909.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,812.72 : 14,702.76 = 5,909.12 : x
2. Step 2: Convert to fraction form
   9,812.72/14,702.76 = 5,909.12/x
3. Step 3: Cross multiply
   9,812.72x = 14,702.76 × 5,909.12
4. Step 4: Simplify right side
   9,812.72x = 86,880,373.17
5. Step 5: Solve for x
   x = 86,880,373.17/9,812.72
6. Step 6: Final answer
   x = 8,853.85