Finding the Fourth Proportional to 14,404.40, 21,603.34 and 5,170.40

Step by Step Solution

1. Step 1: Write the proportion equation
   14,404.40 : 21,603.34 = 5,170.40 : x
2. Step 2: Convert to fraction form
   14,404.40/21,603.34 = 5,170.40/x
3. Step 3: Cross multiply
   14,404.40x = 21,603.34 × 5,170.40
4. Step 4: Simplify right side
   14,404.40x = 111,697,909.14
5. Step 5: Solve for x
   x = 111,697,909.14/14,404.40
6. Step 6: Final answer
   x = 7,754.43