Finding the Fourth Proportional to 8,985.72, 12,401.39 and 5,448.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,985.72 : 12,401.39 = 5,448.92 : x
2. Step 2: Convert to fraction form
   8,985.72/12,401.39 = 5,448.92/x
3. Step 3: Cross multiply
   8,985.72x = 12,401.39 × 5,448.92
4. Step 4: Simplify right side
   8,985.72x = 67,574,182.00
5. Step 5: Solve for x
   x = 67,574,182.00/8,985.72
6. Step 6: Final answer
   x = 7,520.17