Finding the Fourth Proportional to 17,915.91, 26,869.55 and 6,822.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,915.91 : 26,869.55 = 6,822.15 : x
2. Step 2: Convert to fraction form
   17,915.91/26,869.55 = 6,822.15/x
3. Step 3: Cross multiply
   17,915.91x = 26,869.55 × 6,822.15
4. Step 4: Simplify right side
   17,915.91x = 183,308,066.42
5. Step 5: Solve for x
   x = 183,308,066.42/17,915.91
6. Step 6: Final answer
   x = 10,231.58