Finding the Fourth Proportional to 12,401.56, 18,627.78 and 8,191.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.56 : 18,627.78 = 8,191.01 : x
2. Step 2: Convert to fraction form
   12,401.56/18,627.78 = 8,191.01/x
3. Step 3: Cross multiply
   12,401.56x = 18,627.78 × 8,191.01
4. Step 4: Simplify right side
   12,401.56x = 152,580,332.26
5. Step 5: Solve for x
   x = 152,580,332.26/12,401.56
6. Step 6: Final answer
   x = 12,303.32