Finding the Fourth Proportional to 8,736.29, 13,105.43 and 2,892.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,736.29 : 13,105.43 = 2,892.90 : x
2. Step 2: Convert to fraction form
   8,736.29/13,105.43 = 2,892.90/x
3. Step 3: Cross multiply
   8,736.29x = 13,105.43 × 2,892.90
4. Step 4: Simplify right side
   8,736.29x = 37,912,683.98
5. Step 5: Solve for x
   x = 37,912,683.98/8,736.29
6. Step 6: Final answer
   x = 4,339.68