Finding the Fourth Proportional to 12,763.94, 17,609.20 and 7,385.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.94 : 17,609.20 = 7,385.39 : x
2. Step 2: Convert to fraction form
   12,763.94/17,609.20 = 7,385.39/x
3. Step 3: Cross multiply
   12,763.94x = 17,609.20 × 7,385.39
4. Step 4: Simplify right side
   12,763.94x = 130,050,835.15
5. Step 5: Solve for x
   x = 130,050,835.15/12,763.94
6. Step 6: Final answer
   x = 10,188.92