Finding the Fourth Proportional to 17,490.29, 26,239.18 and 5,644.74

Step by Step Solution

1. Step 1: Write the proportion equation
   17,490.29 : 26,239.18 = 5,644.74 : x
2. Step 2: Convert to fraction form
   17,490.29/26,239.18 = 5,644.74/x
3. Step 3: Cross multiply
   17,490.29x = 26,239.18 × 5,644.74
4. Step 4: Simplify right side
   17,490.29x = 148,113,320.69
5. Step 5: Solve for x
   x = 148,113,320.69/17,490.29
6. Step 6: Final answer
   x = 8,468.32