Finding the Fourth Proportional to 28,092.80, 42,134.34 and 10,562.78

Step by Step Solution

1. Step 1: Write the proportion equation
   28,092.80 : 42,134.34 = 10,562.78 : x
2. Step 2: Convert to fraction form
   28,092.80/42,134.34 = 10,562.78/x
3. Step 3: Cross multiply
   28,092.80x = 42,134.34 × 10,562.78
4. Step 4: Simplify right side
   28,092.80x = 445,055,763.87
5. Step 5: Solve for x
   x = 445,055,763.87/28,092.80
6. Step 6: Final answer
   x = 15,842.34