Finding the Fourth Proportional to 38,708.50, 53,417.37 and 21,941.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,708.50 : 53,417.37 = 21,941.50 : x
2. Step 2: Convert to fraction form
   38,708.50/53,417.37 = 21,941.50/x
3. Step 3: Cross multiply
   38,708.50x = 53,417.37 × 21,941.50
4. Step 4: Simplify right side
   38,708.50x = 1,172,057,223.86
5. Step 5: Solve for x
   x = 1,172,057,223.86/38,708.50
6. Step 6: Final answer
   x = 30,279.07