Finding the Fourth Proportional to 12,519.31, 18,778.89 and 5,026.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,519.31 : 18,778.89 = 5,026.25 : x
2. Step 2: Convert to fraction form
   12,519.31/18,778.89 = 5,026.25/x
3. Step 3: Cross multiply
   12,519.31x = 18,778.89 × 5,026.25
4. Step 4: Simplify right side
   12,519.31x = 94,387,433.39
5. Step 5: Solve for x
   x = 94,387,433.39/12,519.31
6. Step 6: Final answer
   x = 7,539.35