Finding the Fourth Proportional to 9,990.54, 14,981.91 and 3,747.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.54 : 14,981.91 = 3,747.15 : x
2. Step 2: Convert to fraction form
   9,990.54/14,981.91 = 3,747.15/x
3. Step 3: Cross multiply
   9,990.54x = 14,981.91 × 3,747.15
4. Step 4: Simplify right side
   9,990.54x = 56,139,464.06
5. Step 5: Solve for x
   x = 56,139,464.06/9,990.54
6. Step 6: Final answer
   x = 5,619.26