Finding the Fourth Proportional to 9,988.81, 14,979.32 and 3,745.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.81 : 14,979.32 = 3,745.42 : x
2. Step 2: Convert to fraction form
   9,988.81/14,979.32 = 3,745.42/x
3. Step 3: Cross multiply
   9,988.81x = 14,979.32 × 3,745.42
4. Step 4: Simplify right side
   9,988.81x = 56,103,788.54
5. Step 5: Solve for x
   x = 56,103,788.54/9,988.81
6. Step 6: Final answer
   x = 5,616.67