Finding the Fourth Proportional to 9,386.77, 12,952.17 and 5,611.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.77 : 12,952.17 = 5,611.47 : x
2. Step 2: Convert to fraction form
   9,386.77/12,952.17 = 5,611.47/x
3. Step 3: Cross multiply
   9,386.77x = 12,952.17 × 5,611.47
4. Step 4: Simplify right side
   9,386.77x = 72,680,713.39
5. Step 5: Solve for x
   x = 72,680,713.39/9,386.77
6. Step 6: Final answer
   x = 7,742.89