Finding the Fourth Proportional to 12,145.01, 16,761.56 and 8,798.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.01 : 16,761.56 = 8,798.90 : x
2. Step 2: Convert to fraction form
   12,145.01/16,761.56 = 8,798.90/x
3. Step 3: Cross multiply
   12,145.01x = 16,761.56 × 8,798.90
4. Step 4: Simplify right side
   12,145.01x = 147,483,162.48
5. Step 5: Solve for x
   x = 147,483,162.48/12,145.01
6. Step 6: Final answer
   x = 12,143.52