Finding the Fourth Proportional to 8,958.20, 12,368.70 and 5,426.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.20 : 12,368.70 = 5,426.19 : x
2. Step 2: Convert to fraction form
   8,958.20/12,368.70 = 5,426.19/x
3. Step 3: Cross multiply
   8,958.20x = 12,368.70 × 5,426.19
4. Step 4: Simplify right side
   8,958.20x = 67,114,916.25
5. Step 5: Solve for x
   x = 67,114,916.25/8,958.20
6. Step 6: Final answer
   x = 7,492.01