Finding the Fourth Proportional to 12,903.52, 17,807.57 and 7,240.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,903.52 : 17,807.57 = 7,240.06 : x
2. Step 2: Convert to fraction form
   12,903.52/17,807.57 = 7,240.06/x
3. Step 3: Cross multiply
   12,903.52x = 17,807.57 × 7,240.06
4. Step 4: Simplify right side
   12,903.52x = 128,927,875.25
5. Step 5: Solve for x
   x = 128,927,875.25/12,903.52
6. Step 6: Final answer
   x = 9,991.68