Finding the Fourth Proportional to 12,812.94, 17,680.51 and 7,506.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,812.94 : 17,680.51 = 7,506.77 : x
2. Step 2: Convert to fraction form
   12,812.94/17,680.51 = 7,506.77/x
3. Step 3: Cross multiply
   12,812.94x = 17,680.51 × 7,506.77
4. Step 4: Simplify right side
   12,812.94x = 132,723,443.03
5. Step 5: Solve for x
   x = 132,723,443.03/12,812.94
6. Step 6: Final answer
   x = 10,358.55