Finding the Fourth Proportional to 14,523.43, 21,780.78 and 5,162.21

Step by Step Solution

1. Step 1: Write the proportion equation
   14,523.43 : 21,780.78 = 5,162.21 : x
2. Step 2: Convert to fraction form
   14,523.43/21,780.78 = 5,162.21/x
3. Step 3: Cross multiply
   14,523.43x = 21,780.78 × 5,162.21
4. Step 4: Simplify right side
   14,523.43x = 112,436,988.96
5. Step 5: Solve for x
   x = 112,436,988.96/14,523.43
6. Step 6: Final answer
   x = 7,741.77