Finding the Fourth Proportional to 9,146.07, 12,621.48 and 5,368.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.07 : 12,621.48 = 5,368.57 : x
2. Step 2: Convert to fraction form
   9,146.07/12,621.48 = 5,368.57/x
3. Step 3: Cross multiply
   9,146.07x = 12,621.48 × 5,368.57
4. Step 4: Simplify right side
   9,146.07x = 67,759,298.88
5. Step 5: Solve for x
   x = 67,759,298.88/9,146.07
6. Step 6: Final answer
   x = 7,408.57