Finding the Fourth Proportional to 12,561.02, 18,841.55 and 9,401.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,561.02 : 18,841.55 = 9,401.75 : x
2. Step 2: Convert to fraction form
   12,561.02/18,841.55 = 9,401.75/x
3. Step 3: Cross multiply
   12,561.02x = 18,841.55 × 9,401.75
4. Step 4: Simplify right side
   12,561.02x = 177,143,401.50
5. Step 5: Solve for x
   x = 177,143,401.50/12,561.02
6. Step 6: Final answer
   x = 14,102.63