Finding the Fourth Proportional to 72,520.92, 108,776.52 and 19,926

Step by Step Solution

1. Step 1: Write the proportion equation
   72,520.92 : 108,776.52 = 19,926 : x
2. Step 2: Convert to fraction form
   72,520.92/108,776.52 = 19,926/x
3. Step 3: Cross multiply
   72,520.92x = 108,776.52 × 19,926
4. Step 4: Simplify right side
   72,520.92x = 2,167,480,937.52
5. Step 5: Solve for x
   x = 2,167,480,937.52/72,520.92
6. Step 6: Final answer
   x = 29,887.66