Finding the Fourth Proportional to 9,316.86, 12,857.37 and 5,337.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,316.86 : 12,857.37 = 5,337.89 : x
2. Step 2: Convert to fraction form
   9,316.86/12,857.37 = 5,337.89/x
3. Step 3: Cross multiply
   9,316.86x = 12,857.37 × 5,337.89
4. Step 4: Simplify right side
   9,316.86x = 68,631,135.77
5. Step 5: Solve for x
   x = 68,631,135.77/9,316.86
6. Step 6: Final answer
   x = 7,366.34