Finding the Fourth Proportional to 10,085.72, 15,119.91 and 3,511.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.72 : 15,119.91 = 3,511.04 : x
2. Step 2: Convert to fraction form
   10,085.72/15,119.91 = 3,511.04/x
3. Step 3: Cross multiply
   10,085.72x = 15,119.91 × 3,511.04
4. Step 4: Simplify right side
   10,085.72x = 53,086,533.21
5. Step 5: Solve for x
   x = 53,086,533.21/10,085.72
6. Step 6: Final answer
   x = 5,263.54