Finding the Fourth Proportional to 10,665.91, 14,717.78 and 7,516.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.91 : 14,717.78 = 7,516.63 : x
2. Step 2: Convert to fraction form
   10,665.91/14,717.78 = 7,516.63/x
3. Step 3: Cross multiply
   10,665.91x = 14,717.78 × 7,516.63
4. Step 4: Simplify right side
   10,665.91x = 110,628,033.09
5. Step 5: Solve for x
   x = 110,628,033.09/10,665.91
6. Step 6: Final answer
   x = 10,372.12