Finding the Fourth Proportional to 9,308.61, 12,845.67 and 5,274.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.61 : 12,845.67 = 5,274.84 : x
2. Step 2: Convert to fraction form
   9,308.61/12,845.67 = 5,274.84/x
3. Step 3: Cross multiply
   9,308.61x = 12,845.67 × 5,274.84
4. Step 4: Simplify right side
   9,308.61x = 67,758,853.94
5. Step 5: Solve for x
   x = 67,758,853.94/9,308.61
6. Step 6: Final answer
   x = 7,279.16