Finding the Fourth Proportional to 12,195.29, 18,294.42 and 3,875.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,195.29 : 18,294.42 = 3,875.78 : x
2. Step 2: Convert to fraction form
   12,195.29/18,294.42 = 3,875.78/x
3. Step 3: Cross multiply
   12,195.29x = 18,294.42 × 3,875.78
4. Step 4: Simplify right side
   12,195.29x = 70,905,147.15
5. Step 5: Solve for x
   x = 70,905,147.15/12,195.29
6. Step 6: Final answer
   x = 5,814.14