Finding the Fourth Proportional to 23,685.51, 35,513.69 and 21,440.19

Step by Step Solution

1. Step 1: Write the proportion equation
   23,685.51 : 35,513.69 = 21,440.19 : x
2. Step 2: Convert to fraction form
   23,685.51/35,513.69 = 21,440.19/x
3. Step 3: Cross multiply
   23,685.51x = 35,513.69 × 21,440.19
4. Step 4: Simplify right side
   23,685.51x = 761,420,407.78
5. Step 5: Solve for x
   x = 761,420,407.78/23,685.51
6. Step 6: Final answer
   x = 32,147.09