Finding the Fourth Proportional to 6,557.12, 9,042.72 and 5,062.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,557.12 : 9,042.72 = 5,062.80 : x
2. Step 2: Convert to fraction form
   6,557.12/9,042.72 = 5,062.80/x
3. Step 3: Cross multiply
   6,557.12x = 9,042.72 × 5,062.80
4. Step 4: Simplify right side
   6,557.12x = 45,781,482.82
5. Step 5: Solve for x
   x = 45,781,482.82/6,557.12
6. Step 6: Final answer
   x = 6,981.95