Finding the Fourth Proportional to 9,816.90, 13,546.72 and 5,340.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,816.90 : 13,546.72 = 5,340.62 : x
2. Step 2: Convert to fraction form
   9,816.90/13,546.72 = 5,340.62/x
3. Step 3: Cross multiply
   9,816.90x = 13,546.72 × 5,340.62
4. Step 4: Simplify right side
   9,816.90x = 72,347,883.77
5. Step 5: Solve for x
   x = 72,347,883.77/9,816.90
6. Step 6: Final answer
   x = 7,369.73