Finding the Fourth Proportional to 6,991.32, 9,648.02 and 3,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,991.32 : 9,648.02 = 3,847.50 : x
2. Step 2: Convert to fraction form
   6,991.32/9,648.02 = 3,847.50/x
3. Step 3: Cross multiply
   6,991.32x = 9,648.02 × 3,847.50
4. Step 4: Simplify right side
   6,991.32x = 37,120,737.71
5. Step 5: Solve for x
   x = 37,120,737.71/6,991.32
6. Step 6: Final answer
   x = 5,309.55