Finding the Fourth Proportional to 6,361.71, 9,543.83 and 1,978.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,361.71 : 9,543.83 = 1,978.98 : x
2. Step 2: Convert to fraction form
   6,361.71/9,543.83 = 1,978.98/x
3. Step 3: Cross multiply
   6,361.71x = 9,543.83 × 1,978.98
4. Step 4: Simplify right side
   6,361.71x = 18,887,038.80
5. Step 5: Solve for x
   x = 18,887,038.80/6,361.71
6. Step 6: Final answer
   x = 2,968.86