Finding the Fourth Proportional to 25,543.78, 35,266.61 and 17,490.91

Step by Step Solution

1. Step 1: Write the proportion equation
   25,543.78 : 35,266.61 = 17,490.91 : x
2. Step 2: Convert to fraction form
   25,543.78/35,266.61 = 17,490.91/x
3. Step 3: Cross multiply
   25,543.78x = 35,266.61 × 17,490.91
4. Step 4: Simplify right side
   25,543.78x = 616,844,837.73
5. Step 5: Solve for x
   x = 616,844,837.73/25,543.78
6. Step 6: Final answer
   x = 24,148.54