Finding the Fourth Proportional to 28,377.06, 39,158.82 and 15,801

Step by Step Solution

1. Step 1: Write the proportion equation
   28,377.06 : 39,158.82 = 15,801 : x
2. Step 2: Convert to fraction form
   28,377.06/39,158.82 = 15,801/x
3. Step 3: Cross multiply
   28,377.06x = 39,158.82 × 15,801
4. Step 4: Simplify right side
   28,377.06x = 618,748,514.82
5. Step 5: Solve for x
   x = 618,748,514.82/28,377.06
6. Step 6: Final answer
   x = 21,804.53