Finding the Fourth Proportional to 9,878.94, 13,632.26 and 5,401.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,878.94 : 13,632.26 = 5,401.76 : x
2. Step 2: Convert to fraction form
   9,878.94/13,632.26 = 5,401.76/x
3. Step 3: Cross multiply
   9,878.94x = 13,632.26 × 5,401.76
4. Step 4: Simplify right side
   9,878.94x = 73,638,101.61
5. Step 5: Solve for x
   x = 73,638,101.61/9,878.94
6. Step 6: Final answer
   x = 7,454.05