Finding the Fourth Proportional to 11,404.72, 15,739.68 and 7,210

Step by Step Solution

1. Step 1: Write the proportion equation
   11,404.72 : 15,739.68 = 7,210 : x
2. Step 2: Convert to fraction form
   11,404.72/15,739.68 = 7,210/x
3. Step 3: Cross multiply
   11,404.72x = 15,739.68 × 7,210
4. Step 4: Simplify right side
   11,404.72x = 113,483,092.80
5. Step 5: Solve for x
   x = 113,483,092.80/11,404.72
6. Step 6: Final answer
   x = 9,950.54