Finding the Fourth Proportional to 9,878.37, 13,632.51 and 5,401.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,878.37 : 13,632.51 = 5,401.86 : x
2. Step 2: Convert to fraction form
   9,878.37/13,632.51 = 5,401.86/x
3. Step 3: Cross multiply
   9,878.37x = 13,632.51 × 5,401.86
4. Step 4: Simplify right side
   9,878.37x = 73,640,910.47
5. Step 5: Solve for x
   x = 73,640,910.47/9,878.37
6. Step 6: Final answer
   x = 7,454.76