Finding the Fourth Proportional to 10,109.81, 15,167.78 and 5,182.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.81 : 15,167.78 = 5,182.94 : x
2. Step 2: Convert to fraction form
   10,109.81/15,167.78 = 5,182.94/x
3. Step 3: Cross multiply
   10,109.81x = 15,167.78 × 5,182.94
4. Step 4: Simplify right side
   10,109.81x = 78,613,693.67
5. Step 5: Solve for x
   x = 78,613,693.67/10,109.81
6. Step 6: Final answer
   x = 7,775.98