Finding the Fourth Proportional to 13,141.16, 19,726.30 and 5,355.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,141.16 : 19,726.30 = 5,355.40 : x
2. Step 2: Convert to fraction form
   13,141.16/19,726.30 = 5,355.40/x
3. Step 3: Cross multiply
   13,141.16x = 19,726.30 × 5,355.40
4. Step 4: Simplify right side
   13,141.16x = 105,642,227.02
5. Step 5: Solve for x
   x = 105,642,227.02/13,141.16
6. Step 6: Final answer
   x = 8,039.03