Finding the Fourth Proportional to 21,854.30, 30,158.89 and 12,294.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,854.30 : 30,158.89 = 12,294.19 : x
2. Step 2: Convert to fraction form
   21,854.30/30,158.89 = 12,294.19/x
3. Step 3: Cross multiply
   21,854.30x = 30,158.89 × 12,294.19
4. Step 4: Simplify right side
   21,854.30x = 370,779,071.40
5. Step 5: Solve for x
   x = 370,779,071.40/21,854.30
6. Step 6: Final answer
   x = 16,965.96