Finding the Fourth Proportional to 21,436.83, 29,559.72 and 14,631.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,436.83 : 29,559.72 = 14,631.62 : x
2. Step 2: Convert to fraction form
   21,436.83/29,559.72 = 14,631.62/x
3. Step 3: Cross multiply
   21,436.83x = 29,559.72 × 14,631.62
4. Step 4: Simplify right side
   21,436.83x = 432,506,442.55
5. Step 5: Solve for x
   x = 432,506,442.55/21,436.83
6. Step 6: Final answer
   x = 20,175.86