Finding the Fourth Proportional to 7,987.25, 11,900.61 and 7,540.13

Step by Step Solution

1. Step 1: Write the proportion equation
   7,987.25 : 11,900.61 = 7,540.13 : x
2. Step 2: Convert to fraction form
   7,987.25/11,900.61 = 7,540.13/x
3. Step 3: Cross multiply
   7,987.25x = 11,900.61 × 7,540.13
4. Step 4: Simplify right side
   7,987.25x = 89,732,086.98
5. Step 5: Solve for x
   x = 89,732,086.98/7,987.25
6. Step 6: Final answer
   x = 11,234.42