Finding the Fourth Proportional to 10,989.55, 16,493.51 and 4,754.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.55 : 16,493.51 = 4,754.30 : x
2. Step 2: Convert to fraction form
   10,989.55/16,493.51 = 4,754.30/x
3. Step 3: Cross multiply
   10,989.55x = 16,493.51 × 4,754.30
4. Step 4: Simplify right side
   10,989.55x = 78,415,147.71
5. Step 5: Solve for x
   x = 78,415,147.71/10,989.55
6. Step 6: Final answer
   x = 7,135.43