Finding the Fourth Proportional to 12,298.16, 18,436.28 and 4,505.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.16 : 18,436.28 = 4,505.15 : x
2. Step 2: Convert to fraction form
   12,298.16/18,436.28 = 4,505.15/x
3. Step 3: Cross multiply
   12,298.16x = 18,436.28 × 4,505.15
4. Step 4: Simplify right side
   12,298.16x = 83,058,092.13
5. Step 5: Solve for x
   x = 83,058,092.13/12,298.16
6. Step 6: Final answer
   x = 6,753.70