Finding the Fourth Proportional to 9,978.39, 14,963.94 and 2,956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.39 : 14,963.94 = 2,956.50 : x
2. Step 2: Convert to fraction form
   9,978.39/14,963.94 = 2,956.50/x
3. Step 3: Cross multiply
   9,978.39x = 14,963.94 × 2,956.50
4. Step 4: Simplify right side
   9,978.39x = 44,240,888.61
5. Step 5: Solve for x
   x = 44,240,888.61/9,978.39
6. Step 6: Final answer
   x = 4,433.67