Finding the Fourth Proportional to 55,071.36, 82,606.32 and 13,518

Step by Step Solution

1. Step 1: Write the proportion equation
   55,071.36 : 82,606.32 = 13,518 : x
2. Step 2: Convert to fraction form
   55,071.36/82,606.32 = 13,518/x
3. Step 3: Cross multiply
   55,071.36x = 82,606.32 × 13,518
4. Step 4: Simplify right side
   55,071.36x = 1,116,672,233.76
5. Step 5: Solve for x
   x = 1,116,672,233.76/55,071.36
6. Step 6: Final answer
   x = 20,276.82