Finding the Fourth Proportional to 12,793.32, 19,192.60 and 5,397.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,793.32 : 19,192.60 = 5,397.78 : x
2. Step 2: Convert to fraction form
   12,793.32/19,192.60 = 5,397.78/x
3. Step 3: Cross multiply
   12,793.32x = 19,192.60 × 5,397.78
4. Step 4: Simplify right side
   12,793.32x = 103,597,432.43
5. Step 5: Solve for x
   x = 103,597,432.43/12,793.32
6. Step 6: Final answer
   x = 8,097.78