Finding the Fourth Proportional to 8,308.89, 11,470.10 and 7,170.03

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.89 : 11,470.10 = 7,170.03 : x
2. Step 2: Convert to fraction form
   8,308.89/11,470.10 = 7,170.03/x
3. Step 3: Cross multiply
   8,308.89x = 11,470.10 × 7,170.03
4. Step 4: Simplify right side
   8,308.89x = 82,240,925.25
5. Step 5: Solve for x
   x = 82,240,925.25/8,308.89
6. Step 6: Final answer
   x = 9,897.94