Finding the Fourth Proportional to 23,827.95, 32,886.54 and 13,221

Step by Step Solution

1. Step 1: Write the proportion equation
   23,827.95 : 32,886.54 = 13,221 : x
2. Step 2: Convert to fraction form
   23,827.95/32,886.54 = 13,221/x
3. Step 3: Cross multiply
   23,827.95x = 32,886.54 × 13,221
4. Step 4: Simplify right side
   23,827.95x = 434,792,945.34
5. Step 5: Solve for x
   x = 434,792,945.34/23,827.95
6. Step 6: Final answer
   x = 18,247.18