Finding the Fourth Proportional to 13,332.50, 18,398.85 and 7,743.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,332.50 : 18,398.85 = 7,743.86 : x
2. Step 2: Convert to fraction form
   13,332.50/18,398.85 = 7,743.86/x
3. Step 3: Cross multiply
   13,332.50x = 18,398.85 × 7,743.86
4. Step 4: Simplify right side
   13,332.50x = 142,478,118.56
5. Step 5: Solve for x
   x = 142,478,118.56/13,332.50
6. Step 6: Final answer
   x = 10,686.53