Finding the Fourth Proportional to 6,886.42, 10,323.87 and 3,191.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,886.42 : 10,323.87 = 3,191.30 : x
2. Step 2: Convert to fraction form
   6,886.42/10,323.87 = 3,191.30/x
3. Step 3: Cross multiply
   6,886.42x = 10,323.87 × 3,191.30
4. Step 4: Simplify right side
   6,886.42x = 32,946,541.46
5. Step 5: Solve for x
   x = 32,946,541.46/6,886.42
6. Step 6: Final answer
   x = 4,784.28