Finding the Fourth Proportional to 12,385.85, 17,091.34 and 7,349.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.85 : 17,091.34 = 7,349.20 : x
2. Step 2: Convert to fraction form
   12,385.85/17,091.34 = 7,349.20/x
3. Step 3: Cross multiply
   12,385.85x = 17,091.34 × 7,349.20
4. Step 4: Simplify right side
   12,385.85x = 125,607,614.83
5. Step 5: Solve for x
   x = 125,607,614.83/12,385.85
6. Step 6: Final answer
   x = 10,141.22