Finding the Fourth Proportional to 9,375.76, 12,938.20 and 5,184.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,375.76 : 12,938.20 = 5,184.08 : x
2. Step 2: Convert to fraction form
   9,375.76/12,938.20 = 5,184.08/x
3. Step 3: Cross multiply
   9,375.76x = 12,938.20 × 5,184.08
4. Step 4: Simplify right side
   9,375.76x = 67,072,663.86
5. Step 5: Solve for x
   x = 67,072,663.86/9,375.76
6. Step 6: Final answer
   x = 7,153.84