Finding the Fourth Proportional to 10,931.56, 16,396.74 and 5,383.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,931.56 : 16,396.74 = 5,383.48 : x
2. Step 2: Convert to fraction form
   10,931.56/16,396.74 = 5,383.48/x
3. Step 3: Cross multiply
   10,931.56x = 16,396.74 × 5,383.48
4. Step 4: Simplify right side
   10,931.56x = 88,271,521.86
5. Step 5: Solve for x
   x = 88,271,521.86/10,931.56
6. Step 6: Final answer
   x = 8,074.92