Finding the Fourth Proportional to 10,445.59, 15,650.79 and 5,173.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,445.59 : 15,650.79 = 5,173.57 : x
2. Step 2: Convert to fraction form
   10,445.59/15,650.79 = 5,173.57/x
3. Step 3: Cross multiply
   10,445.59x = 15,650.79 × 5,173.57
4. Step 4: Simplify right side
   10,445.59x = 80,970,457.62
5. Step 5: Solve for x
   x = 80,970,457.62/10,445.59
6. Step 6: Final answer
   x = 7,751.64