Finding the Fourth Proportional to 10,647.59, 15,973.30 and 4,404.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.59 : 15,973.30 = 4,404.21 : x
2. Step 2: Convert to fraction form
   10,647.59/15,973.30 = 4,404.21/x
3. Step 3: Cross multiply
   10,647.59x = 15,973.30 × 4,404.21
4. Step 4: Simplify right side
   10,647.59x = 70,349,713.20
5. Step 5: Solve for x
   x = 70,349,713.20/10,647.59
6. Step 6: Final answer
   x = 6,607.11