Finding the Fourth Proportional to 22,065.39, 30,454.65 and 13,117.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,065.39 : 30,454.65 = 13,117.86 : x
2. Step 2: Convert to fraction form
   22,065.39/30,454.65 = 13,117.86/x
3. Step 3: Cross multiply
   22,065.39x = 30,454.65 × 13,117.86
4. Step 4: Simplify right side
   22,065.39x = 399,499,835.05
5. Step 5: Solve for x
   x = 399,499,835.05/22,065.39
6. Step 6: Final answer
   x = 18,105.27