Finding the Fourth Proportional to 40,584.24, 60,870.69 and 13,929.81

Step by Step Solution

1. Step 1: Write the proportion equation
   40,584.24 : 60,870.69 = 13,929.81 : x
2. Step 2: Convert to fraction form
   40,584.24/60,870.69 = 13,929.81/x
3. Step 3: Cross multiply
   40,584.24x = 60,870.69 × 13,929.81
4. Step 4: Simplify right side
   40,584.24x = 847,917,146.27
5. Step 5: Solve for x
   x = 847,917,146.27/40,584.24
6. Step 6: Final answer
   x = 20,892.77