Finding the Fourth Proportional to 10,885.60, 16,320.18 and 5,614.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.60 : 16,320.18 = 5,614.96 : x
2. Step 2: Convert to fraction form
   10,885.60/16,320.18 = 5,614.96/x
3. Step 3: Cross multiply
   10,885.60x = 16,320.18 × 5,614.96
4. Step 4: Simplify right side
   10,885.60x = 91,637,157.89
5. Step 5: Solve for x
   x = 91,637,157.89/10,885.60
6. Step 6: Final answer
   x = 8,418.20