Finding the Fourth Proportional to 14,404.40, 21,570.15 and 13,748.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,404.40 : 21,570.15 = 13,748.30 : x
2. Step 2: Convert to fraction form
   14,404.40/21,570.15 = 13,748.30/x
3. Step 3: Cross multiply
   14,404.40x = 21,570.15 × 13,748.30
4. Step 4: Simplify right side
   14,404.40x = 296,552,893.25
5. Step 5: Solve for x
   x = 296,552,893.25/14,404.40
6. Step 6: Final answer
   x = 20,587.66