Finding the Fourth Proportional to 10,989.04, 16,485.12 and 3,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.04 : 16,485.12 = 3,196.72 : x
2. Step 2: Convert to fraction form
   10,989.04/16,485.12 = 3,196.72/x
3. Step 3: Cross multiply
   10,989.04x = 16,485.12 × 3,196.72
4. Step 4: Simplify right side
   10,989.04x = 52,698,312.81
5. Step 5: Solve for x
   x = 52,698,312.81/10,989.04
6. Step 6: Final answer
   x = 4,795.53