Finding the Fourth Proportional to 7,310.05, 10,001.42 and 7,279.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,310.05 : 10,001.42 = 7,279.07 : x
2. Step 2: Convert to fraction form
   7,310.05/10,001.42 = 7,279.07/x
3. Step 3: Cross multiply
   7,310.05x = 10,001.42 × 7,279.07
4. Step 4: Simplify right side
   7,310.05x = 72,801,018.12
5. Step 5: Solve for x
   x = 72,801,018.12/7,310.05
6. Step 6: Final answer
   x = 9,959.03