Finding the Fourth Proportional to 6,374.34, 9,561.42 and 1,991.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,374.34 : 9,561.42 = 1,991.82 : x
2. Step 2: Convert to fraction form
   6,374.34/9,561.42 = 1,991.82/x
3. Step 3: Cross multiply
   6,374.34x = 9,561.42 × 1,991.82
4. Step 4: Simplify right side
   6,374.34x = 19,044,627.58
5. Step 5: Solve for x
   x = 19,044,627.58/6,374.34
6. Step 6: Final answer
   x = 2,987.70