Finding the Fourth Proportional to 10,916.49, 15,071.82 and 8,522.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,916.49 : 15,071.82 = 8,522.34 : x
2. Step 2: Convert to fraction form
   10,916.49/15,071.82 = 8,522.34/x
3. Step 3: Cross multiply
   10,916.49x = 15,071.82 × 8,522.34
4. Step 4: Simplify right side
   10,916.49x = 128,447,174.46
5. Step 5: Solve for x
   x = 128,447,174.46/10,916.49
6. Step 6: Final answer
   x = 11,766.34