Finding the Fourth Proportional to 10,691.28, 16,038.24 and 3,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,691.28 : 16,038.24 = 3,672.72 : x
2. Step 2: Convert to fraction form
   10,691.28/16,038.24 = 3,672.72/x
3. Step 3: Cross multiply
   10,691.28x = 16,038.24 × 3,672.72
4. Step 4: Simplify right side
   10,691.28x = 58,903,964.81
5. Step 5: Solve for x
   x = 58,903,964.81/10,691.28
6. Step 6: Final answer
   x = 5,509.53