Finding the Fourth Proportional to 9,938.72, 14,907.63 and 2,918.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,938.72 : 14,907.63 = 2,918.46 : x
2. Step 2: Convert to fraction form
   9,938.72/14,907.63 = 2,918.46/x
3. Step 3: Cross multiply
   9,938.72x = 14,907.63 × 2,918.46
4. Step 4: Simplify right side
   9,938.72x = 43,507,321.85
5. Step 5: Solve for x
   x = 43,507,321.85/9,938.72
6. Step 6: Final answer
   x = 4,377.56