Finding the Fourth Proportional to 25,443.39, 35,088.90 and 15,884.15

Step by Step Solution

1. Step 1: Write the proportion equation
   25,443.39 : 35,088.90 = 15,884.15 : x
2. Step 2: Convert to fraction form
   25,443.39/35,088.90 = 15,884.15/x
3. Step 3: Cross multiply
   25,443.39x = 35,088.90 × 15,884.15
4. Step 4: Simplify right side
   25,443.39x = 557,357,350.94
5. Step 5: Solve for x
   x = 557,357,350.94/25,443.39
6. Step 6: Final answer
   x = 21,905.78