Finding the Fourth Proportional to 8,973.18, 12,383.98 and 5,196.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,973.18 : 12,383.98 = 5,196.31 : x
2. Step 2: Convert to fraction form
   8,973.18/12,383.98 = 5,196.31/x
3. Step 3: Cross multiply
   8,973.18x = 12,383.98 × 5,196.31
4. Step 4: Simplify right side
   8,973.18x = 64,350,955.16
5. Step 5: Solve for x
   x = 64,350,955.16/8,973.18
6. Step 6: Final answer
   x = 7,171.48