Finding the Fourth Proportional to 8,820.41, 12,172.49 and 5,043.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.41 : 12,172.49 = 5,043.57 : x
2. Step 2: Convert to fraction form
   8,820.41/12,172.49 = 5,043.57/x
3. Step 3: Cross multiply
   8,820.41x = 12,172.49 × 5,043.57
4. Step 4: Simplify right side
   8,820.41x = 61,392,805.39
5. Step 5: Solve for x
   x = 61,392,805.39/8,820.41
6. Step 6: Final answer
   x = 6,960.31