Finding the Fourth Proportional to 13,015.72, 17,961.76 and 7,350.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,015.72 : 17,961.76 = 7,350.70 : x
2. Step 2: Convert to fraction form
   13,015.72/17,961.76 = 7,350.70/x
3. Step 3: Cross multiply
   13,015.72x = 17,961.76 × 7,350.70
4. Step 4: Simplify right side
   13,015.72x = 132,031,509.23
5. Step 5: Solve for x
   x = 132,031,509.23/13,015.72
6. Step 6: Final answer
   x = 10,144.00