Finding the Fourth Proportional to 9,990.82, 14,977.59 and 3,830.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.82 : 14,977.59 = 3,830.50 : x
2. Step 2: Convert to fraction form
   9,990.82/14,977.59 = 3,830.50/x
3. Step 3: Cross multiply
   9,990.82x = 14,977.59 × 3,830.50
4. Step 4: Simplify right side
   9,990.82x = 57,371,658.50
5. Step 5: Solve for x
   x = 57,371,658.50/9,990.82
6. Step 6: Final answer
   x = 5,742.44