Finding the Fourth Proportional to 9,857.95, 13,604.27 and 5,381.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,857.95 : 13,604.27 = 5,381.99 : x
2. Step 2: Convert to fraction form
   9,857.95/13,604.27 = 5,381.99/x
3. Step 3: Cross multiply
   9,857.95x = 13,604.27 × 5,381.99
4. Step 4: Simplify right side
   9,857.95x = 73,218,092.56
5. Step 5: Solve for x
   x = 73,218,092.56/9,857.95
6. Step 6: Final answer
   x = 7,427.32