Finding the Fourth Proportional to 9,180.72, 12,669.48 and 5,454

Step by Step Solution

1. Step 1: Write the proportion equation
   9,180.72 : 12,669.48 = 5,454 : x
2. Step 2: Convert to fraction form
   9,180.72/12,669.48 = 5,454/x
3. Step 3: Cross multiply
   9,180.72x = 12,669.48 × 5,454
4. Step 4: Simplify right side
   9,180.72x = 69,099,343.92
5. Step 5: Solve for x
   x = 69,099,343.92/9,180.72
6. Step 6: Final answer
   x = 7,526.57