Finding the Fourth Proportional to 25,158.84, 34,713.90 and 13,980.60

Step by Step Solution

1. Step 1: Write the proportion equation
   25,158.84 : 34,713.90 = 13,980.60 : x
2. Step 2: Convert to fraction form
   25,158.84/34,713.90 = 13,980.60/x
3. Step 3: Cross multiply
   25,158.84x = 34,713.90 × 13,980.60
4. Step 4: Simplify right side
   25,158.84x = 485,321,150.34
5. Step 5: Solve for x
   x = 485,321,150.34/25,158.84
6. Step 6: Final answer
   x = 19,290.28