Finding the Fourth Proportional to 12,191.09, 18,284.76 and 3,870.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,191.09 : 18,284.76 = 3,870.02 : x
2. Step 2: Convert to fraction form
   12,191.09/18,284.76 = 3,870.02/x
3. Step 3: Cross multiply
   12,191.09x = 18,284.76 × 3,870.02
4. Step 4: Simplify right side
   12,191.09x = 70,762,367.55
5. Step 5: Solve for x
   x = 70,762,367.55/12,191.09
6. Step 6: Final answer
   x = 5,804.44