Finding the Fourth Proportional to 13,449.98, 18,562.50 and 7,707.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,449.98 : 18,562.50 = 7,707.98 : x
2. Step 2: Convert to fraction form
   13,449.98/18,562.50 = 7,707.98/x
3. Step 3: Cross multiply
   13,449.98x = 18,562.50 × 7,707.98
4. Step 4: Simplify right side
   13,449.98x = 143,079,378.75
5. Step 5: Solve for x
   x = 143,079,378.75/13,449.98
6. Step 6: Final answer
   x = 10,637.89