Finding the Fourth Proportional to 23,784.27, 35,680.49 and 7,990.81

Step by Step Solution

1. Step 1: Write the proportion equation
   23,784.27 : 35,680.49 = 7,990.81 : x
2. Step 2: Convert to fraction form
   23,784.27/35,680.49 = 7,990.81/x
3. Step 3: Cross multiply
   23,784.27x = 35,680.49 × 7,990.81
4. Step 4: Simplify right side
   23,784.27x = 285,115,917.11
5. Step 5: Solve for x
   x = 285,115,917.11/23,784.27
6. Step 6: Final answer
   x = 11,987.59