Finding the Fourth Proportional to 10,915.73, 16,374.47 and 5,291.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,915.73 : 16,374.47 = 5,291.76 : x
2. Step 2: Convert to fraction form
   10,915.73/16,374.47 = 5,291.76/x
3. Step 3: Cross multiply
   10,915.73x = 16,374.47 × 5,291.76
4. Step 4: Simplify right side
   10,915.73x = 86,649,738.91
5. Step 5: Solve for x
   x = 86,649,738.91/10,915.73
6. Step 6: Final answer
   x = 7,938.07