Finding the Fourth Proportional to 22,068.12, 30,458.43 and 13,113.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,068.12 : 30,458.43 = 13,113.89 : x
2. Step 2: Convert to fraction form
   22,068.12/30,458.43 = 13,113.89/x
3. Step 3: Cross multiply
   22,068.12x = 30,458.43 × 13,113.89
4. Step 4: Simplify right side
   22,068.12x = 399,428,358.88
5. Step 5: Solve for x
   x = 399,428,358.88/22,068.12
6. Step 6: Final answer
   x = 18,099.80