Finding the Fourth Proportional to 14,990.25, 20,667.32 and 12,291.53

Step by Step Solution

1. Step 1: Write the proportion equation
   14,990.25 : 20,667.32 = 12,291.53 : x
2. Step 2: Convert to fraction form
   14,990.25/20,667.32 = 12,291.53/x
3. Step 3: Cross multiply
   14,990.25x = 20,667.32 × 12,291.53
4. Step 4: Simplify right side
   14,990.25x = 254,032,819.01
5. Step 5: Solve for x
   x = 254,032,819.01/14,990.25
6. Step 6: Final answer
   x = 16,946.54