Finding the Fourth Proportional to 28,026.02, 42,062.76 and 13,245.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,026.02 : 42,062.76 = 13,245.56 : x
2. Step 2: Convert to fraction form
   28,026.02/42,062.76 = 13,245.56/x
3. Step 3: Cross multiply
   28,026.02x = 42,062.76 × 13,245.56
4. Step 4: Simplify right side
   28,026.02x = 557,144,811.35
5. Step 5: Solve for x
   x = 557,144,811.35/28,026.02
6. Step 6: Final answer
   x = 19,879.56