Finding the Fourth Proportional to 10,720.17, 16,085.75 and 5,104.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,720.17 : 16,085.75 = 5,104.19 : x
2. Step 2: Convert to fraction form
   10,720.17/16,085.75 = 5,104.19/x
3. Step 3: Cross multiply
   10,720.17x = 16,085.75 × 5,104.19
4. Step 4: Simplify right side
   10,720.17x = 82,104,618.34
5. Step 5: Solve for x
   x = 82,104,618.34/10,720.17
6. Step 6: Final answer
   x = 7,658.89