Finding the Fourth Proportional to 9,180.12, 12,668.76 and 5,454.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,180.12 : 12,668.76 = 5,454.12 : x
2. Step 2: Convert to fraction form
   9,180.12/12,668.76 = 5,454.12/x
3. Step 3: Cross multiply
   9,180.12x = 12,668.76 × 5,454.12
4. Step 4: Simplify right side
   9,180.12x = 69,096,937.29
5. Step 5: Solve for x
   x = 69,096,937.29/9,180.12
6. Step 6: Final answer
   x = 7,526.80