Finding the Fourth Proportional to 35,970.72, 49,638.59 and 20,862.43

Step by Step Solution

1. Step 1: Write the proportion equation
   35,970.72 : 49,638.59 = 20,862.43 : x
2. Step 2: Convert to fraction form
   35,970.72/49,638.59 = 20,862.43/x
3. Step 3: Cross multiply
   35,970.72x = 49,638.59 × 20,862.43
4. Step 4: Simplify right side
   35,970.72x = 1,035,581,459.00
5. Step 5: Solve for x
   x = 1,035,581,459.00/35,970.72
6. Step 6: Final answer
   x = 28,789.57