Finding the Fourth Proportional to 9,816.86, 13,547.18 and 5,340.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,816.86 : 13,547.18 = 5,340.54 : x
2. Step 2: Convert to fraction form
   9,816.86/13,547.18 = 5,340.54/x
3. Step 3: Cross multiply
   9,816.86x = 13,547.18 × 5,340.54
4. Step 4: Simplify right side
   9,816.86x = 72,349,256.68
5. Step 5: Solve for x
   x = 72,349,256.68/9,816.86
6. Step 6: Final answer
   x = 7,369.90