Finding the Fourth Proportional to 13,150.94, 19,726.59 and 4,385.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.94 : 19,726.59 = 4,385.86 : x
2. Step 2: Convert to fraction form
   13,150.94/19,726.59 = 4,385.86/x
3. Step 3: Cross multiply
   13,150.94x = 19,726.59 × 4,385.86
4. Step 4: Simplify right side
   13,150.94x = 86,518,062.02
5. Step 5: Solve for x
   x = 86,518,062.02/13,150.94
6. Step 6: Final answer
   x = 6,578.85