Finding the Fourth Proportional to 10,899.38, 16,351.50 and 3,973.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.38 : 16,351.50 = 3,973.88 : x
2. Step 2: Convert to fraction form
   10,899.38/16,351.50 = 3,973.88/x
3. Step 3: Cross multiply
   10,899.38x = 16,351.50 × 3,973.88
4. Step 4: Simplify right side
   10,899.38x = 64,978,817.06
5. Step 5: Solve for x
   x = 64,978,817.06/10,899.38
6. Step 6: Final answer
   x = 5,961.70