Finding the Fourth Proportional to 10,088.72, 13,921.78 and 5,612.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,088.72 : 13,921.78 = 5,612.30 : x
2. Step 2: Convert to fraction form
   10,088.72/13,921.78 = 5,612.30/x
3. Step 3: Cross multiply
   10,088.72x = 13,921.78 × 5,612.30
4. Step 4: Simplify right side
   10,088.72x = 78,133,205.89
5. Step 5: Solve for x
   x = 78,133,205.89/10,088.72
6. Step 6: Final answer
   x = 7,744.61