Finding the Fourth Proportional to 5,151.69, 7,109.50 and 2,913.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,151.69 : 7,109.50 = 2,913.93 : x
2. Step 2: Convert to fraction form
   5,151.69/7,109.50 = 2,913.93/x
3. Step 3: Cross multiply
   5,151.69x = 7,109.50 × 2,913.93
4. Step 4: Simplify right side
   5,151.69x = 20,716,585.34
5. Step 5: Solve for x
   x = 20,716,585.34/5,151.69
6. Step 6: Final answer
   x = 4,021.32