Finding the Fourth Proportional to 9,411.75, 12,988.07 and 5,162.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.75 : 12,988.07 = 5,162.91 : x
2. Step 2: Convert to fraction form
   9,411.75/12,988.07 = 5,162.91/x
3. Step 3: Cross multiply
   9,411.75x = 12,988.07 × 5,162.91
4. Step 4: Simplify right side
   9,411.75x = 67,056,210.67
5. Step 5: Solve for x
   x = 67,056,210.67/9,411.75
6. Step 6: Final answer
   x = 7,124.73