Finding the Fourth Proportional to 12,385.86, 17,086.96 and 7,350.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.86 : 17,086.96 = 7,350.30 : x
2. Step 2: Convert to fraction form
   12,385.86/17,086.96 = 7,350.30/x
3. Step 3: Cross multiply
   12,385.86x = 17,086.96 × 7,350.30
4. Step 4: Simplify right side
   12,385.86x = 125,594,282.09
5. Step 5: Solve for x
   x = 125,594,282.09/12,385.86
6. Step 6: Final answer
   x = 10,140.13