Finding the Fourth Proportional to 23,618.51, 35,406.56 and 21,564.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,618.51 : 35,406.56 = 21,564.09 : x
2. Step 2: Convert to fraction form
   23,618.51/35,406.56 = 21,564.09/x
3. Step 3: Cross multiply
   23,618.51x = 35,406.56 × 21,564.09
4. Step 4: Simplify right side
   23,618.51x = 763,510,300.34
5. Step 5: Solve for x
   x = 763,510,300.34/23,618.51
6. Step 6: Final answer
   x = 32,326.78