Finding the Fourth Proportional to 10,972.10, 16,447.35 and 5,426.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,972.10 : 16,447.35 = 5,426.30 : x
2. Step 2: Convert to fraction form
   10,972.10/16,447.35 = 5,426.30/x
3. Step 3: Cross multiply
   10,972.10x = 16,447.35 × 5,426.30
4. Step 4: Simplify right side
   10,972.10x = 89,248,255.31
5. Step 5: Solve for x
   x = 89,248,255.31/10,972.10
6. Step 6: Final answer
   x = 8,134.11