Finding the Fourth Proportional to 9,375.78, 12,938.49 and 5,184.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,375.78 : 12,938.49 = 5,184.06 : x
2. Step 2: Convert to fraction form
   9,375.78/12,938.49 = 5,184.06/x
3. Step 3: Cross multiply
   9,375.78x = 12,938.49 × 5,184.06
4. Step 4: Simplify right side
   9,375.78x = 67,073,908.47
5. Step 5: Solve for x
   x = 67,073,908.47/9,375.78
6. Step 6: Final answer
   x = 7,153.96