Finding the Fourth Proportional to 9,778.95, 14,662.57 and 3,112.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778.95 : 14,662.57 = 3,112.57 : x
2. Step 2: Convert to fraction form
   9,778.95/14,662.57 = 3,112.57/x
3. Step 3: Cross multiply
   9,778.95x = 14,662.57 × 3,112.57
4. Step 4: Simplify right side
   9,778.95x = 45,638,305.51
5. Step 5: Solve for x
   x = 45,638,305.51/9,778.95
6. Step 6: Final answer
   x = 4,666.99