Finding the Fourth Proportional to 13,150.95, 19,726.01 and 4,385.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.95 : 19,726.01 = 4,385.94 : x
2. Step 2: Convert to fraction form
   13,150.95/19,726.01 = 4,385.94/x
3. Step 3: Cross multiply
   13,150.95x = 19,726.01 × 4,385.94
4. Step 4: Simplify right side
   13,150.95x = 86,517,096.30
5. Step 5: Solve for x
   x = 86,517,096.30/13,150.95
6. Step 6: Final answer
   x = 6,578.77