Finding the Fourth Proportional to 10,971.32, 16,459.86 and 4,397.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,971.32 : 16,459.86 = 4,397.72 : x
2. Step 2: Convert to fraction form
   10,971.32/16,459.86 = 4,397.72/x
3. Step 3: Cross multiply
   10,971.32x = 16,459.86 × 4,397.72
4. Step 4: Simplify right side
   10,971.32x = 72,385,855.52
5. Step 5: Solve for x
   x = 72,385,855.52/10,971.32
6. Step 6: Final answer
   x = 6,597.73