Finding the Fourth Proportional to 28,298.03, 42,382.34 and 13,517.33

Step by Step Solution

1. Step 1: Write the proportion equation
   28,298.03 : 42,382.34 = 13,517.33 : x
2. Step 2: Convert to fraction form
   28,298.03/42,382.34 = 13,517.33/x
3. Step 3: Cross multiply
   28,298.03x = 42,382.34 × 13,517.33
4. Step 4: Simplify right side
   28,298.03x = 572,896,114.32
5. Step 5: Solve for x
   x = 572,896,114.32/28,298.03
6. Step 6: Final answer
   x = 20,245.09