Finding the Fourth Proportional to 13,597.48, 18,783.46 and 12,888.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,597.48 : 18,783.46 = 12,888.10 : x
2. Step 2: Convert to fraction form
   13,597.48/18,783.46 = 12,888.10/x
3. Step 3: Cross multiply
   13,597.48x = 18,783.46 × 12,888.10
4. Step 4: Simplify right side
   13,597.48x = 242,083,110.83
5. Step 5: Solve for x
   x = 242,083,110.83/13,597.48
6. Step 6: Final answer
   x = 17,803.53