Finding the Fourth Proportional to 25,321.10, 34,941.43 and 13,990.48

Step by Step Solution

1. Step 1: Write the proportion equation
   25,321.10 : 34,941.43 = 13,990.48 : x
2. Step 2: Convert to fraction form
   25,321.10/34,941.43 = 13,990.48/x
3. Step 3: Cross multiply
   25,321.10x = 34,941.43 × 13,990.48
4. Step 4: Simplify right side
   25,321.10x = 488,847,253.59
5. Step 5: Solve for x
   x = 488,847,253.59/25,321.10
6. Step 6: Final answer
   x = 19,305.92