Finding the Fourth Proportional to 11,181.02, 15,426.80 and 7,198.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,181.02 : 15,426.80 = 7,198.86 : x
2. Step 2: Convert to fraction form
   11,181.02/15,426.80 = 7,198.86/x
3. Step 3: Cross multiply
   11,181.02x = 15,426.80 × 7,198.86
4. Step 4: Simplify right side
   11,181.02x = 111,055,337.45
5. Step 5: Solve for x
   x = 111,055,337.45/11,181.02
6. Step 6: Final answer
   x = 9,932.49