Finding the Fourth Proportional to 23,486.71, 32,392.83 and 20,648.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,486.71 : 32,392.83 = 20,648.05 : x
2. Step 2: Convert to fraction form
   23,486.71/32,392.83 = 20,648.05/x
3. Step 3: Cross multiply
   23,486.71x = 32,392.83 × 20,648.05
4. Step 4: Simplify right side
   23,486.71x = 668,848,773.48
5. Step 5: Solve for x
   x = 668,848,773.48/23,486.71
6. Step 6: Final answer
   x = 28,477.76