Finding the Fourth Proportional to 21,612.83, 32,411.54 and 13,267.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,612.83 : 32,411.54 = 13,267.71 : x
2. Step 2: Convert to fraction form
   21,612.83/32,411.54 = 13,267.71/x
3. Step 3: Cross multiply
   21,612.83x = 32,411.54 × 13,267.71
4. Step 4: Simplify right side
   21,612.83x = 430,026,847.03
5. Step 5: Solve for x
   x = 430,026,847.03/21,612.83
6. Step 6: Final answer
   x = 19,896.84