Finding the Fourth Proportional to 9,210.18, 12,711.68 and 5,433.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,210.18 : 12,711.68 = 5,433.12 : x
2. Step 2: Convert to fraction form
   9,210.18/12,711.68 = 5,433.12/x
3. Step 3: Cross multiply
   9,210.18x = 12,711.68 × 5,433.12
4. Step 4: Simplify right side
   9,210.18x = 69,064,082.84
5. Step 5: Solve for x
   x = 69,064,082.84/9,210.18
6. Step 6: Final answer
   x = 7,498.67