Finding the Fourth Proportional to 9,947.88, 14,911.86 and 4,757.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.88 : 14,911.86 = 4,757.40 : x
2. Step 2: Convert to fraction form
   9,947.88/14,911.86 = 4,757.40/x
3. Step 3: Cross multiply
   9,947.88x = 14,911.86 × 4,757.40
4. Step 4: Simplify right side
   9,947.88x = 70,941,682.76
5. Step 5: Solve for x
   x = 70,941,682.76/9,947.88
6. Step 6: Final answer
   x = 7,131.34