Finding the Fourth Proportional to 12,106.92, 18,156.38 and 3,897

Step by Step Solution

1. Step 1: Write the proportion equation
   12,106.92 : 18,156.38 = 3,897 : x
2. Step 2: Convert to fraction form
   12,106.92/18,156.38 = 3,897/x
3. Step 3: Cross multiply
   12,106.92x = 18,156.38 × 3,897
4. Step 4: Simplify right side
   12,106.92x = 70,755,412.86
5. Step 5: Solve for x
   x = 70,755,412.86/12,106.92
6. Step 6: Final answer
   x = 5,844.21