Finding the Fourth Proportional to 12,520.07, 18,786.43 and 5,498.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,520.07 : 18,786.43 = 5,498.18 : x
2. Step 2: Convert to fraction form
   12,520.07/18,786.43 = 5,498.18/x
3. Step 3: Cross multiply
   12,520.07x = 18,786.43 × 5,498.18
4. Step 4: Simplify right side
   12,520.07x = 103,291,157.09
5. Step 5: Solve for x
   x = 103,291,157.09/12,520.07
6. Step 6: Final answer
   x = 8,250.05