Finding the Fourth Proportional to 9,909.24, 14,845.37 and 7,129.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,909.24 : 14,845.37 = 7,129.01 : x
2. Step 2: Convert to fraction form
   9,909.24/14,845.37 = 7,129.01/x
3. Step 3: Cross multiply
   9,909.24x = 14,845.37 × 7,129.01
4. Step 4: Simplify right side
   9,909.24x = 105,832,681.31
5. Step 5: Solve for x
   x = 105,832,681.31/9,909.24
6. Step 6: Final answer
   x = 10,680.20