Finding the Fourth Proportional to 35,215.83, 52,826.18 and 13,028.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,215.83 : 52,826.18 = 13,028.72 : x
2. Step 2: Convert to fraction form
   35,215.83/52,826.18 = 13,028.72/x
3. Step 3: Cross multiply
   35,215.83x = 52,826.18 × 13,028.72
4. Step 4: Simplify right side
   35,215.83x = 688,257,178.62
5. Step 5: Solve for x
   x = 688,257,178.62/35,215.83
6. Step 6: Final answer
   x = 19,543.97