Finding the Fourth Proportional to 11,426.42, 17,132.70 and 7,472.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.42 : 17,132.70 = 7,472.90 : x
2. Step 2: Convert to fraction form
   11,426.42/17,132.70 = 7,472.90/x
3. Step 3: Cross multiply
   11,426.42x = 17,132.70 × 7,472.90
4. Step 4: Simplify right side
   11,426.42x = 128,030,953.83
5. Step 5: Solve for x
   x = 128,030,953.83/11,426.42
6. Step 6: Final answer
   x = 11,204.82