Finding the Fourth Proportional to 9,131.76, 12,590.10 and 7,451.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.76 : 12,590.10 = 7,451.46 : x
2. Step 2: Convert to fraction form
   9,131.76/12,590.10 = 7,451.46/x
3. Step 3: Cross multiply
   9,131.76x = 12,590.10 × 7,451.46
4. Step 4: Simplify right side
   9,131.76x = 93,814,626.55
5. Step 5: Solve for x
   x = 93,814,626.55/9,131.76
6. Step 6: Final answer
   x = 10,273.44