Finding the Fourth Proportional to 12,389.96, 17,092.14 and 8,201.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,389.96 : 17,092.14 = 8,201.72 : x
2. Step 2: Convert to fraction form
   12,389.96/17,092.14 = 8,201.72/x
3. Step 3: Cross multiply
   12,389.96x = 17,092.14 × 8,201.72
4. Step 4: Simplify right side
   12,389.96x = 140,184,946.48
5. Step 5: Solve for x
   x = 140,184,946.48/12,389.96
6. Step 6: Final answer
   x = 11,314.40