Finding the Fourth Proportional to 10,234.50, 15,342.03 and 3,989.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,234.50 : 15,342.03 = 3,989.94 : x
2. Step 2: Convert to fraction form
   10,234.50/15,342.03 = 3,989.94/x
3. Step 3: Cross multiply
   10,234.50x = 15,342.03 × 3,989.94
4. Step 4: Simplify right side
   10,234.50x = 61,213,779.18
5. Step 5: Solve for x
   x = 61,213,779.18/10,234.50
6. Step 6: Final answer
   x = 5,981.12