Finding the Fourth Proportional to 25,080.42, 37,622.17 and 8,439.06

Step by Step Solution

1. Step 1: Write the proportion equation
   25,080.42 : 37,622.17 = 8,439.06 : x
2. Step 2: Convert to fraction form
   25,080.42/37,622.17 = 8,439.06/x
3. Step 3: Cross multiply
   25,080.42x = 37,622.17 × 8,439.06
4. Step 4: Simplify right side
   25,080.42x = 317,495,749.96
5. Step 5: Solve for x
   x = 317,495,749.96/25,080.42
6. Step 6: Final answer
   x = 12,659.11