Finding the Fourth Proportional to 9,288.32, 12,817.35 and 5,511.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.32 : 12,817.35 = 5,511.87 : x
2. Step 2: Convert to fraction form
   9,288.32/12,817.35 = 5,511.87/x
3. Step 3: Cross multiply
   9,288.32x = 12,817.35 × 5,511.87
4. Step 4: Simplify right side
   9,288.32x = 70,647,566.94
5. Step 5: Solve for x
   x = 70,647,566.94/9,288.32
6. Step 6: Final answer
   x = 7,606.07