Finding the Fourth Proportional to 35,111.52, 52,682.76 and 12,919.68

Step by Step Solution

1. Step 1: Write the proportion equation
   35,111.52 : 52,682.76 = 12,919.68 : x
2. Step 2: Convert to fraction form
   35,111.52/52,682.76 = 12,919.68/x
3. Step 3: Cross multiply
   35,111.52x = 52,682.76 × 12,919.68
4. Step 4: Simplify right side
   35,111.52x = 680,644,400.72
5. Step 5: Solve for x
   x = 680,644,400.72/35,111.52
6. Step 6: Final answer
   x = 19,385.22