Finding the Fourth Proportional to 12,598.24, 18,899.56 and 5,198.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,598.24 : 18,899.56 = 5,198.62 : x
2. Step 2: Convert to fraction form
   12,598.24/18,899.56 = 5,198.62/x
3. Step 3: Cross multiply
   12,598.24x = 18,899.56 × 5,198.62
4. Step 4: Simplify right side
   12,598.24x = 98,251,630.61
5. Step 5: Solve for x
   x = 98,251,630.61/12,598.24
6. Step 6: Final answer
   x = 7,798.84