Finding the Fourth Proportional to 14,345.50, 21,515.82 and 3,815.68

Step by Step Solution

1. Step 1: Write the proportion equation
   14,345.50 : 21,515.82 = 3,815.68 : x
2. Step 2: Convert to fraction form
   14,345.50/21,515.82 = 3,815.68/x
3. Step 3: Cross multiply
   14,345.50x = 21,515.82 × 3,815.68
4. Step 4: Simplify right side
   14,345.50x = 82,097,484.06
5. Step 5: Solve for x
   x = 82,097,484.06/14,345.50
6. Step 6: Final answer
   x = 5,722.87