Finding the Fourth Proportional to 28,196.90, 38,902.88 and 16,258.62

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.90 : 38,902.88 = 16,258.62 : x
2. Step 2: Convert to fraction form
   28,196.90/38,902.88 = 16,258.62/x
3. Step 3: Cross multiply
   28,196.90x = 38,902.88 × 16,258.62
4. Step 4: Simplify right side
   28,196.90x = 632,507,142.83
5. Step 5: Solve for x
   x = 632,507,142.83/28,196.90
6. Step 6: Final answer
   x = 22,431.80