Finding the Fourth Proportional to 12,697.88, 19,051.38 and 5,677.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,697.88 : 19,051.38 = 5,677.30 : x
2. Step 2: Convert to fraction form
   12,697.88/19,051.38 = 5,677.30/x
3. Step 3: Cross multiply
   12,697.88x = 19,051.38 × 5,677.30
4. Step 4: Simplify right side
   12,697.88x = 108,160,399.67
5. Step 5: Solve for x
   x = 108,160,399.67/12,697.88
6. Step 6: Final answer
   x = 8,517.99