Finding the Fourth Proportional to 13,567.57, 18,722.80 and 7,517.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,567.57 : 18,722.80 = 7,517.56 : x
2. Step 2: Convert to fraction form
   13,567.57/18,722.80 = 7,517.56/x
3. Step 3: Cross multiply
   13,567.57x = 18,722.80 × 7,517.56
4. Step 4: Simplify right side
   13,567.57x = 140,749,772.37
5. Step 5: Solve for x
   x = 140,749,772.37/13,567.57
6. Step 6: Final answer
   x = 10,373.99