Finding the Fourth Proportional to 8,839.34, 13,250.72 and 2,991.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,839.34 : 13,250.72 = 2,991.86 : x
2. Step 2: Convert to fraction form
   8,839.34/13,250.72 = 2,991.86/x
3. Step 3: Cross multiply
   8,839.34x = 13,250.72 × 2,991.86
4. Step 4: Simplify right side
   8,839.34x = 39,644,299.14
5. Step 5: Solve for x
   x = 39,644,299.14/8,839.34
6. Step 6: Final answer
   x = 4,484.98