Finding the Fourth Proportional to 19,826.88, 27,362.34 and 13,100.70

Step by Step Solution

1. Step 1: Write the proportion equation
   19,826.88 : 27,362.34 = 13,100.70 : x
2. Step 2: Convert to fraction form
   19,826.88/27,362.34 = 13,100.70/x
3. Step 3: Cross multiply
   19,826.88x = 27,362.34 × 13,100.70
4. Step 4: Simplify right side
   19,826.88x = 358,465,807.64
5. Step 5: Solve for x
   x = 358,465,807.64/19,826.88
6. Step 6: Final answer
   x = 18,079.79