Finding the Fourth Proportional to 9,108.72, 12,530.50 and 7,426.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,108.72 : 12,530.50 = 7,426.44 : x
2. Step 2: Convert to fraction form
   9,108.72/12,530.50 = 7,426.44/x
3. Step 3: Cross multiply
   9,108.72x = 12,530.50 × 7,426.44
4. Step 4: Simplify right side
   9,108.72x = 93,056,987.85
5. Step 5: Solve for x
   x = 93,056,987.85/9,108.72
6. Step 6: Final answer
   x = 10,216.25