Finding the Fourth Proportional to 38,826, 58,248.72 and 11,124

Step by Step Solution

1. Step 1: Write the proportion equation
   38,826 : 58,248.72 = 11,124 : x
2. Step 2: Convert to fraction form
   38,826/58,248.72 = 11,124/x
3. Step 3: Cross multiply
   38,826x = 58,248.72 × 11,124
4. Step 4: Simplify right side
   38,826x = 647,958,761.28
5. Step 5: Solve for x
   x = 647,958,761.28/38,826
6. Step 6: Final answer
   x = 16,688.78