Finding the Fourth Proportional to 9,998.72, 14,998.50 and 3,758.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,998.72 : 14,998.50 = 3,758.12 : x
2. Step 2: Convert to fraction form
   9,998.72/14,998.50 = 3,758.12/x
3. Step 3: Cross multiply
   9,998.72x = 14,998.50 × 3,758.12
4. Step 4: Simplify right side
   9,998.72x = 56,366,162.82
5. Step 5: Solve for x
   x = 56,366,162.82/9,998.72
6. Step 6: Final answer
   x = 5,637.34