Finding the Fourth Proportional to 9,918.72, 14,872.07 and 3,907.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,918.72 : 14,872.07 = 3,907.59 : x
2. Step 2: Convert to fraction form
   9,918.72/14,872.07 = 3,907.59/x
3. Step 3: Cross multiply
   9,918.72x = 14,872.07 × 3,907.59
4. Step 4: Simplify right side
   9,918.72x = 58,113,932.47
5. Step 5: Solve for x
   x = 58,113,932.47/9,918.72
6. Step 6: Final answer
   x = 5,859.02