Finding the Fourth Proportional to 17,787.98, 26,685.79 and 5,308.99

Step by Step Solution

1. Step 1: Write the proportion equation
   17,787.98 : 26,685.79 = 5,308.99 : x
2. Step 2: Convert to fraction form
   17,787.98/26,685.79 = 5,308.99/x
3. Step 3: Cross multiply
   17,787.98x = 26,685.79 × 5,308.99
4. Step 4: Simplify right side
   17,787.98x = 141,674,512.27
5. Step 5: Solve for x
   x = 141,674,512.27/17,787.98
6. Step 6: Final answer
   x = 7,964.62