Finding the Fourth Proportional to 9,370.25, 12,931.89 and 5,178.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,370.25 : 12,931.89 = 5,178.50 : x
2. Step 2: Convert to fraction form
   9,370.25/12,931.89 = 5,178.50/x
3. Step 3: Cross multiply
   9,370.25x = 12,931.89 × 5,178.50
4. Step 4: Simplify right side
   9,370.25x = 66,967,792.37
5. Step 5: Solve for x
   x = 66,967,792.37/9,370.25
6. Step 6: Final answer
   x = 7,146.85