Finding the Fourth Proportional to 28,340.57, 42,498.45 and 10,798.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,340.57 : 42,498.45 = 10,798.10 : x
2. Step 2: Convert to fraction form
   28,340.57/42,498.45 = 10,798.10/x
3. Step 3: Cross multiply
   28,340.57x = 42,498.45 × 10,798.10
4. Step 4: Simplify right side
   28,340.57x = 458,902,512.95
5. Step 5: Solve for x
   x = 458,902,512.95/28,340.57
6. Step 6: Final answer
   x = 16,192.42