Finding the Fourth Proportional to 9,818.82, 13,549.62 and 5,342.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,818.82 : 13,549.62 = 5,342.40 : x
2. Step 2: Convert to fraction form
   9,818.82/13,549.62 = 5,342.40/x
3. Step 3: Cross multiply
   9,818.82x = 13,549.62 × 5,342.40
4. Step 4: Simplify right side
   9,818.82x = 72,387,489.89
5. Step 5: Solve for x
   x = 72,387,489.89/9,818.82
6. Step 6: Final answer
   x = 7,372.32