Finding the Fourth Proportional to 9,388.46, 12,955.88 and 5,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.46 : 12,955.88 = 5,196.72 : x
2. Step 2: Convert to fraction form
   9,388.46/12,955.88 = 5,196.72/x
3. Step 3: Cross multiply
   9,388.46x = 12,955.88 × 5,196.72
4. Step 4: Simplify right side
   9,388.46x = 67,328,080.71
5. Step 5: Solve for x
   x = 67,328,080.71/9,388.46
6. Step 6: Final answer
   x = 7,171.37