Finding the Fourth Proportional to 12,885.31, 19,329.18 and 4,118.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,885.31 : 19,329.18 = 4,118.14 : x
2. Step 2: Convert to fraction form
   12,885.31/19,329.18 = 4,118.14/x
3. Step 3: Cross multiply
   12,885.31x = 19,329.18 × 4,118.14
4. Step 4: Simplify right side
   12,885.31x = 79,600,269.33
5. Step 5: Solve for x
   x = 79,600,269.33/12,885.31
6. Step 6: Final answer
   x = 6,177.60