Finding the Fourth Proportional to 9,989.31, 14,986.91 and 2,969.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989.31 : 14,986.91 = 2,969.38 : x
2. Step 2: Convert to fraction form
   9,989.31/14,986.91 = 2,969.38/x
3. Step 3: Cross multiply
   9,989.31x = 14,986.91 × 2,969.38
4. Step 4: Simplify right side
   9,989.31x = 44,501,830.82
5. Step 5: Solve for x
   x = 44,501,830.82/9,989.31
6. Step 6: Final answer
   x = 4,454.95