Finding the Fourth Proportional to 9,940.26, 14,900.61 and 4,749.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,940.26 : 14,900.61 = 4,749.78 : x
2. Step 2: Convert to fraction form
   9,940.26/14,900.61 = 4,749.78/x
3. Step 3: Cross multiply
   9,940.26x = 14,900.61 × 4,749.78
4. Step 4: Simplify right side
   9,940.26x = 70,774,619.37
5. Step 5: Solve for x
   x = 70,774,619.37/9,940.26
6. Step 6: Final answer
   x = 7,120.00