Finding the Fourth Proportional to 10,185.48, 15,279.13 and 2,789.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.48 : 15,279.13 = 2,789.98 : x
2. Step 2: Convert to fraction form
   10,185.48/15,279.13 = 2,789.98/x
3. Step 3: Cross multiply
   10,185.48x = 15,279.13 × 2,789.98
4. Step 4: Simplify right side
   10,185.48x = 42,628,432.41
5. Step 5: Solve for x
   x = 42,628,432.41/10,185.48
6. Step 6: Final answer
   x = 4,185.22