Finding the Fourth Proportional to 28,196.06, 42,280.85 and 16,353.20

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.06 : 42,280.85 = 16,353.20 : x
2. Step 2: Convert to fraction form
   28,196.06/42,280.85 = 16,353.20/x
3. Step 3: Cross multiply
   28,196.06x = 42,280.85 × 16,353.20
4. Step 4: Simplify right side
   28,196.06x = 691,427,196.22
5. Step 5: Solve for x
   x = 691,427,196.22/28,196.06
6. Step 6: Final answer
   x = 24,522.12