Finding the Fourth Proportional to 9,300.42, 13,939.29 and 5,140.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,300.42 : 13,939.29 = 5,140.26 : x
2. Step 2: Convert to fraction form
   9,300.42/13,939.29 = 5,140.26/x
3. Step 3: Cross multiply
   9,300.42x = 13,939.29 × 5,140.26
4. Step 4: Simplify right side
   9,300.42x = 71,651,574.82
5. Step 5: Solve for x
   x = 71,651,574.82/9,300.42
6. Step 6: Final answer
   x = 7,704.12