Finding the Fourth Proportional to 8,072.52, 12,108.90 and 5,316.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.52 : 12,108.90 = 5,316.84 : x
2. Step 2: Convert to fraction form
   8,072.52/12,108.90 = 5,316.84/x
3. Step 3: Cross multiply
   8,072.52x = 12,108.90 × 5,316.84
4. Step 4: Simplify right side
   8,072.52x = 64,381,083.88
5. Step 5: Solve for x
   x = 64,381,083.88/8,072.52
6. Step 6: Final answer
   x = 7,975.34