Finding the Fourth Proportional to 17,789.49, 26,688.05 and 5,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,789.49 : 26,688.05 = 5,310.50 : x
2. Step 2: Convert to fraction form
   17,789.49/26,688.05 = 5,310.50/x
3. Step 3: Cross multiply
   17,789.49x = 26,688.05 × 5,310.50
4. Step 4: Simplify right side
   17,789.49x = 141,726,729.53
5. Step 5: Solve for x
   x = 141,726,729.53/17,789.49
6. Step 6: Final answer
   x = 7,966.88