Finding the Fourth Proportional to 7,191.50, 10,771.67 and 3,485.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,191.50 : 10,771.67 = 3,485.98 : x
2. Step 2: Convert to fraction form
   7,191.50/10,771.67 = 3,485.98/x
3. Step 3: Cross multiply
   7,191.50x = 10,771.67 × 3,485.98
4. Step 4: Simplify right side
   7,191.50x = 37,549,826.19
5. Step 5: Solve for x
   x = 37,549,826.19/7,191.50
6. Step 6: Final answer
   x = 5,221.42