Finding the Fourth Proportional to 9,859.18, 13,605.60 and 5,382.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.18 : 13,605.60 = 5,382.94 : x
2. Step 2: Convert to fraction form
   9,859.18/13,605.60 = 5,382.94/x
3. Step 3: Cross multiply
   9,859.18x = 13,605.60 × 5,382.94
4. Step 4: Simplify right side
   9,859.18x = 73,238,128.46
5. Step 5: Solve for x
   x = 73,238,128.46/9,859.18
6. Step 6: Final answer
   x = 7,428.42