Finding the Fourth Proportional to 10,215.42, 15,312.23 and 5,823.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.42 : 15,312.23 = 5,823.42 : x
2. Step 2: Convert to fraction form
   10,215.42/15,312.23 = 5,823.42/x
3. Step 3: Cross multiply
   10,215.42x = 15,312.23 × 5,823.42
4. Step 4: Simplify right side
   10,215.42x = 89,169,546.43
5. Step 5: Solve for x
   x = 89,169,546.43/10,215.42
6. Step 6: Final answer
   x = 8,728.92