Finding the Fourth Proportional to 8,708.63, 13,072.17 and 5,424.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,708.63 : 13,072.17 = 5,424.04 : x
2. Step 2: Convert to fraction form
   8,708.63/13,072.17 = 5,424.04/x
3. Step 3: Cross multiply
   8,708.63x = 13,072.17 × 5,424.04
4. Step 4: Simplify right side
   8,708.63x = 70,903,907.61
5. Step 5: Solve for x
   x = 70,903,907.61/8,708.63
6. Step 6: Final answer
   x = 8,141.80