Finding the Fourth Proportional to 8,694.18, 12,003.73 and 5,158.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,694.18 : 12,003.73 = 5,158.53 : x
2. Step 2: Convert to fraction form
   8,694.18/12,003.73 = 5,158.53/x
3. Step 3: Cross multiply
   8,694.18x = 12,003.73 × 5,158.53
4. Step 4: Simplify right side
   8,694.18x = 61,921,588.42
5. Step 5: Solve for x
   x = 61,921,588.42/8,694.18
6. Step 6: Final answer
   x = 7,122.19