Finding the Fourth Proportional to 9,988.54, 14,978.92 and 3,745.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.54 : 14,978.92 = 3,745.15 : x
2. Step 2: Convert to fraction form
   9,988.54/14,978.92 = 3,745.15/x
3. Step 3: Cross multiply
   9,988.54x = 14,978.92 × 3,745.15
4. Step 4: Simplify right side
   9,988.54x = 56,098,283.51
5. Step 5: Solve for x
   x = 56,098,283.51/9,988.54
6. Step 6: Final answer
   x = 5,616.26