Finding the Fourth Proportional to 9,110.86, 12,572.76 and 5,131.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,110.86 : 12,572.76 = 5,131.74 : x
2. Step 2: Convert to fraction form
   9,110.86/12,572.76 = 5,131.74/x
3. Step 3: Cross multiply
   9,110.86x = 12,572.76 × 5,131.74
4. Step 4: Simplify right side
   9,110.86x = 64,520,072.54
5. Step 5: Solve for x
   x = 64,520,072.54/9,110.86
6. Step 6: Final answer
   x = 7,081.67