Finding the Fourth Proportional to 13,423.69, 18,525.50 and 7,759.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,423.69 : 18,525.50 = 7,759.45 : x
2. Step 2: Convert to fraction form
   13,423.69/18,525.50 = 7,759.45/x
3. Step 3: Cross multiply
   13,423.69x = 18,525.50 × 7,759.45
4. Step 4: Simplify right side
   13,423.69x = 143,747,690.98
5. Step 5: Solve for x
   x = 143,747,690.98/13,423.69
6. Step 6: Final answer
   x = 10,708.51