Finding the Fourth Proportional to 12,149.56, 18,195.61 and 9,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,149.56 : 18,195.61 = 9,498.50 : x
2. Step 2: Convert to fraction form
   12,149.56/18,195.61 = 9,498.50/x
3. Step 3: Cross multiply
   12,149.56x = 18,195.61 × 9,498.50
4. Step 4: Simplify right side
   12,149.56x = 172,831,001.59
5. Step 5: Solve for x
   x = 172,831,001.59/12,149.56
6. Step 6: Final answer
   x = 14,225.29