Finding the Fourth Proportional to 12,783.78, 19,186.56 and 4,998.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.78 : 19,186.56 = 4,998.06 : x
2. Step 2: Convert to fraction form
   12,783.78/19,186.56 = 4,998.06/x
3. Step 3: Cross multiply
   12,783.78x = 19,186.56 × 4,998.06
4. Step 4: Simplify right side
   12,783.78x = 95,895,578.07
5. Step 5: Solve for x
   x = 95,895,578.07/12,783.78
6. Step 6: Final answer
   x = 7,501.35