Finding the Fourth Proportional to 9,123.41, 12,593.72 and 5,979.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.41 : 12,593.72 = 5,979.80 : x
2. Step 2: Convert to fraction form
   9,123.41/12,593.72 = 5,979.80/x
3. Step 3: Cross multiply
   9,123.41x = 12,593.72 × 5,979.80
4. Step 4: Simplify right side
   9,123.41x = 75,307,878.84
5. Step 5: Solve for x
   x = 75,307,878.84/9,123.41
6. Step 6: Final answer
   x = 8,254.36