Finding the Fourth Proportional to 39,864, 55,012.32 and 23,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,864 : 55,012.32 = 23,106.72 : x
2. Step 2: Convert to fraction form
   39,864/55,012.32 = 23,106.72/x
3. Step 3: Cross multiply
   39,864x = 55,012.32 × 23,106.72
4. Step 4: Simplify right side
   39,864x = 1,271,154,274.79
5. Step 5: Solve for x
   x = 1,271,154,274.79/39,864
6. Step 6: Final answer
   x = 31,887.27