Finding the Fourth Proportional to 15,401.34, 21,253.86 and 8,327.76

Step by Step Solution

1. Step 1: Write the proportion equation
   15,401.34 : 21,253.86 = 8,327.76 : x
2. Step 2: Convert to fraction form
   15,401.34/21,253.86 = 8,327.76/x
3. Step 3: Cross multiply
   15,401.34x = 21,253.86 × 8,327.76
4. Step 4: Simplify right side
   15,401.34x = 176,997,045.15
5. Step 5: Solve for x
   x = 176,997,045.15/15,401.34
6. Step 6: Final answer
   x = 11,492.31