Finding the Fourth Proportional to 28,047.95, 42,059.62 and 10,505.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,047.95 : 42,059.62 = 10,505.48 : x
2. Step 2: Convert to fraction form
   28,047.95/42,059.62 = 10,505.48/x
3. Step 3: Cross multiply
   28,047.95x = 42,059.62 × 10,505.48
4. Step 4: Simplify right side
   28,047.95x = 441,856,233.89
5. Step 5: Solve for x
   x = 441,856,233.89/28,047.95
6. Step 6: Final answer
   x = 15,753.60