Finding the Fourth Proportional to 10,008.72, 13,812.12 and 5,532.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,008.72 : 13,812.12 = 5,532.40 : x
2. Step 2: Convert to fraction form
   10,008.72/13,812.12 = 5,532.40/x
3. Step 3: Cross multiply
   10,008.72x = 13,812.12 × 5,532.40
4. Step 4: Simplify right side
   10,008.72x = 76,414,172.69
5. Step 5: Solve for x
   x = 76,414,172.69/10,008.72
6. Step 6: Final answer
   x = 7,634.76