Finding the Fourth Proportional to 10,085.45, 13,916.61 and 5,608.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.45 : 13,916.61 = 5,608.31 : x
2. Step 2: Convert to fraction form
   10,085.45/13,916.61 = 5,608.31/x
3. Step 3: Cross multiply
   10,085.45x = 13,916.61 × 5,608.31
4. Step 4: Simplify right side
   10,085.45x = 78,048,663.03
5. Step 5: Solve for x
   x = 78,048,663.03/10,085.45
6. Step 6: Final answer
   x = 7,738.74