Finding the Fourth Proportional to 9,303.98, 12,839.60 and 5,112.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,303.98 : 12,839.60 = 5,112.23 : x
2. Step 2: Convert to fraction form
   9,303.98/12,839.60 = 5,112.23/x
3. Step 3: Cross multiply
   9,303.98x = 12,839.60 × 5,112.23
4. Step 4: Simplify right side
   9,303.98x = 65,638,962.75
5. Step 5: Solve for x
   x = 65,638,962.75/9,303.98
6. Step 6: Final answer
   x = 7,054.93