Finding the Fourth Proportional to 9,666.63, 14,505.53 and 5,224.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,666.63 : 14,505.53 = 5,224.31 : x
2. Step 2: Convert to fraction form
   9,666.63/14,505.53 = 5,224.31/x
3. Step 3: Cross multiply
   9,666.63x = 14,505.53 × 5,224.31
4. Step 4: Simplify right side
   9,666.63x = 75,781,359.31
5. Step 5: Solve for x
   x = 75,781,359.31/9,666.63
6. Step 6: Final answer
   x = 7,839.48