Finding the Fourth Proportional to 10,357.33, 14,288.85 and 7,215.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,357.33 : 14,288.85 = 7,215.34 : x
2. Step 2: Convert to fraction form
   10,357.33/14,288.85 = 7,215.34/x
3. Step 3: Cross multiply
   10,357.33x = 14,288.85 × 7,215.34
4. Step 4: Simplify right side
   10,357.33x = 103,098,875.24
5. Step 5: Solve for x
   x = 103,098,875.24/10,357.33
6. Step 6: Final answer
   x = 9,954.20