Finding the Fourth Proportional to 39,061.43, 53,889.90 and 28,876.91

Step by Step Solution

1. Step 1: Write the proportion equation
   39,061.43 : 53,889.90 = 28,876.91 : x
2. Step 2: Convert to fraction form
   39,061.43/53,889.90 = 28,876.91/x
3. Step 3: Cross multiply
   39,061.43x = 53,889.90 × 28,876.91
4. Step 4: Simplify right side
   39,061.43x = 1,556,173,792.21
5. Step 5: Solve for x
   x = 1,556,173,792.21/39,061.43
6. Step 6: Final answer
   x = 39,839.15