Finding the Fourth Proportional to 21,513.60, 32,272.83 and 10,426.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,513.60 : 32,272.83 = 10,426.32 : x
2. Step 2: Convert to fraction form
   21,513.60/32,272.83 = 10,426.32/x
3. Step 3: Cross multiply
   21,513.60x = 32,272.83 × 10,426.32
4. Step 4: Simplify right side
   21,513.60x = 336,486,852.89
5. Step 5: Solve for x
   x = 336,486,852.89/21,513.60
6. Step 6: Final answer
   x = 15,640.66