Finding the Fourth Proportional to 21,848.76, 32,805.96 and 12,499.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,848.76 : 32,805.96 = 12,499.34 : x
2. Step 2: Convert to fraction form
   21,848.76/32,805.96 = 12,499.34/x
3. Step 3: Cross multiply
   21,848.76x = 32,805.96 × 12,499.34
4. Step 4: Simplify right side
   21,848.76x = 410,052,684.04
5. Step 5: Solve for x
   x = 410,052,684.04/21,848.76
6. Step 6: Final answer
   x = 18,767.78