Finding the Fourth Proportional to 10,611.72, 15,919.25 and 3,493.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,611.72 : 15,919.25 = 3,493.71 : x
2. Step 2: Convert to fraction form
   10,611.72/15,919.25 = 3,493.71/x
3. Step 3: Cross multiply
   10,611.72x = 15,919.25 × 3,493.71
4. Step 4: Simplify right side
   10,611.72x = 55,617,225.45
5. Step 5: Solve for x
   x = 55,617,225.45/10,611.72
6. Step 6: Final answer
   x = 5,241.11