Finding the Fourth Proportional to 23,256.77, 34,889.34 and 8,486.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,256.77 : 34,889.34 = 8,486.42 : x
2. Step 2: Convert to fraction form
   23,256.77/34,889.34 = 8,486.42/x
3. Step 3: Cross multiply
   23,256.77x = 34,889.34 × 8,486.42
4. Step 4: Simplify right side
   23,256.77x = 296,085,592.76
5. Step 5: Solve for x
   x = 296,085,592.76/23,256.77
6. Step 6: Final answer
   x = 12,731.16