Finding the Fourth Proportional to 12,365.54, 17,054.54 and 10,870.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365.54 : 17,054.54 = 10,870.28 : x
2. Step 2: Convert to fraction form
   12,365.54/17,054.54 = 10,870.28/x
3. Step 3: Cross multiply
   12,365.54x = 17,054.54 × 10,870.28
4. Step 4: Simplify right side
   12,365.54x = 185,387,625.07
5. Step 5: Solve for x
   x = 185,387,625.07/12,365.54
6. Step 6: Final answer
   x = 14,992.28