Finding the Fourth Proportional to 11,426.91, 17,149.25 and 7,477.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.91 : 17,149.25 = 7,477.10 : x
2. Step 2: Convert to fraction form
   11,426.91/17,149.25 = 7,477.10/x
3. Step 3: Cross multiply
   11,426.91x = 17,149.25 × 7,477.10
4. Step 4: Simplify right side
   11,426.91x = 128,226,534.04
5. Step 5: Solve for x
   x = 128,226,534.04/11,426.91
6. Step 6: Final answer
   x = 11,221.45