Finding the Fourth Proportional to 9,389.40, 12,955.50 and 5,196.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.40 : 12,955.50 = 5,196.84 : x
2. Step 2: Convert to fraction form
   9,389.40/12,955.50 = 5,196.84/x
3. Step 3: Cross multiply
   9,389.40x = 12,955.50 × 5,196.84
4. Step 4: Simplify right side
   9,389.40x = 67,327,660.62
5. Step 5: Solve for x
   x = 67,327,660.62/9,389.40
6. Step 6: Final answer
   x = 7,170.60