Finding the Fourth Proportional to 10,911.32, 15,057.57 and 6,131.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,911.32 : 15,057.57 = 6,131.39 : x
2. Step 2: Convert to fraction form
   10,911.32/15,057.57 = 6,131.39/x
3. Step 3: Cross multiply
   10,911.32x = 15,057.57 × 6,131.39
4. Step 4: Simplify right side
   10,911.32x = 92,323,758.83
5. Step 5: Solve for x
   x = 92,323,758.83/10,911.32
6. Step 6: Final answer
   x = 8,461.29