Finding the Fourth Proportional to 10,491.72, 14,478.54 and 5,775.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,491.72 : 14,478.54 = 5,775.96 : x
2. Step 2: Convert to fraction form
   10,491.72/14,478.54 = 5,775.96/x
3. Step 3: Cross multiply
   10,491.72x = 14,478.54 × 5,775.96
4. Step 4: Simplify right side
   10,491.72x = 83,627,467.90
5. Step 5: Solve for x
   x = 83,627,467.90/10,491.72
6. Step 6: Final answer
   x = 7,970.81