Finding the Fourth Proportional to 25,106.47, 34,635.98 and 15,543.81

Step by Step Solution

1. Step 1: Write the proportion equation
   25,106.47 : 34,635.98 = 15,543.81 : x
2. Step 2: Convert to fraction form
   25,106.47/34,635.98 = 15,543.81/x
3. Step 3: Cross multiply
   25,106.47x = 34,635.98 × 15,543.81
4. Step 4: Simplify right side
   25,106.47x = 538,375,131.14
5. Step 5: Solve for x
   x = 538,375,131.14/25,106.47
6. Step 6: Final answer
   x = 21,443.68