Finding the Fourth Proportional to 9,854.18, 13,598.51 and 5,377.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,854.18 : 13,598.51 = 5,377.98 : x
2. Step 2: Convert to fraction form
   9,854.18/13,598.51 = 5,377.98/x
3. Step 3: Cross multiply
   9,854.18x = 13,598.51 × 5,377.98
4. Step 4: Simplify right side
   9,854.18x = 73,132,487.92
5. Step 5: Solve for x
   x = 73,132,487.92/9,854.18
6. Step 6: Final answer
   x = 7,421.47