Finding the Fourth Proportional to 22,152.92, 33,212.96 and 13,385.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,152.92 : 33,212.96 = 13,385.78 : x
2. Step 2: Convert to fraction form
   22,152.92/33,212.96 = 13,385.78/x
3. Step 3: Cross multiply
   22,152.92x = 33,212.96 × 13,385.78
4. Step 4: Simplify right side
   22,152.92x = 444,581,142.72
5. Step 5: Solve for x
   x = 444,581,142.72/22,152.92
6. Step 6: Final answer
   x = 20,068.74