Finding the Fourth Proportional to 12,250.89, 18,373.64 and 3,929.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,250.89 : 18,373.64 = 3,929.31 : x
2. Step 2: Convert to fraction form
   12,250.89/18,373.64 = 3,929.31/x
3. Step 3: Cross multiply
   12,250.89x = 18,373.64 × 3,929.31
4. Step 4: Simplify right side
   12,250.89x = 72,195,707.74
5. Step 5: Solve for x
   x = 72,195,707.74/12,250.89
6. Step 6: Final answer
   x = 5,893.10