Finding the Fourth Proportional to 21,669.48, 32,410.32 and 12,763.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,669.48 : 32,410.32 = 12,763.56 : x
2. Step 2: Convert to fraction form
   21,669.48/32,410.32 = 12,763.56/x
3. Step 3: Cross multiply
   21,669.48x = 32,410.32 × 12,763.56
4. Step 4: Simplify right side
   21,669.48x = 413,671,063.94
5. Step 5: Solve for x
   x = 413,671,063.94/21,669.48
6. Step 6: Final answer
   x = 19,090.03