Finding the Fourth Proportional to 9,303.93, 12,839.63 and 5,112.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,303.93 : 12,839.63 = 5,112.45 : x
2. Step 2: Convert to fraction form
   9,303.93/12,839.63 = 5,112.45/x
3. Step 3: Cross multiply
   9,303.93x = 12,839.63 × 5,112.45
4. Step 4: Simplify right side
   9,303.93x = 65,641,940.83
5. Step 5: Solve for x
   x = 65,641,940.83/9,303.93
6. Step 6: Final answer
   x = 7,055.29