Finding the Fourth Proportional to 11,627.99, 17,443.94 and 5,385.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,627.99 : 17,443.94 = 5,385.45 : x
2. Step 2: Convert to fraction form
   11,627.99/17,443.94 = 5,385.45/x
3. Step 3: Cross multiply
   11,627.99x = 17,443.94 × 5,385.45
4. Step 4: Simplify right side
   11,627.99x = 93,943,439.75
5. Step 5: Solve for x
   x = 93,943,439.75/11,627.99
6. Step 6: Final answer
   x = 8,079.08