Finding the Fourth Proportional to 3,448.71, 5,191.43 and 3,091.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,448.71 : 5,191.43 = 3,091.50 : x
2. Step 2: Convert to fraction form
   3,448.71/5,191.43 = 3,091.50/x
3. Step 3: Cross multiply
   3,448.71x = 5,191.43 × 3,091.50
4. Step 4: Simplify right side
   3,448.71x = 16,049,290.39
5. Step 5: Solve for x
   x = 16,049,290.39/3,448.71
6. Step 6: Final answer
   x = 4,653.71