Finding the Fourth Proportional to 52,654.77, 78,982.56 and 13,212.09

Step by Step Solution

1. Step 1: Write the proportion equation
   52,654.77 : 78,982.56 = 13,212.09 : x
2. Step 2: Convert to fraction form
   52,654.77/78,982.56 = 13,212.09/x
3. Step 3: Cross multiply
   52,654.77x = 78,982.56 × 13,212.09
4. Step 4: Simplify right side
   52,654.77x = 1,043,524,691.15
5. Step 5: Solve for x
   x = 1,043,524,691.15/52,654.77
6. Step 6: Final answer
   x = 19,818.24