Finding the Fourth Proportional to 9,211.32, 12,711.68 and 5,019.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,211.32 : 12,711.68 = 5,019.57 : x
2. Step 2: Convert to fraction form
   9,211.32/12,711.68 = 5,019.57/x
3. Step 3: Cross multiply
   9,211.32x = 12,711.68 × 5,019.57
4. Step 4: Simplify right side
   9,211.32x = 63,807,167.58
5. Step 5: Solve for x
   x = 63,807,167.58/9,211.32
6. Step 6: Final answer
   x = 6,927.04