Finding the Fourth Proportional to 12,483.12, 17,229.66 and 7,181

Step by Step Solution

1. Step 1: Write the proportion equation
   12,483.12 : 17,229.66 = 7,181 : x
2. Step 2: Convert to fraction form
   12,483.12/17,229.66 = 7,181/x
3. Step 3: Cross multiply
   12,483.12x = 17,229.66 × 7,181
4. Step 4: Simplify right side
   12,483.12x = 123,726,188.46
5. Step 5: Solve for x
   x = 123,726,188.46/12,483.12
6. Step 6: Final answer
   x = 9,911.48