Finding the Fourth Proportional to 52,152.72, 78,228.72 and 12,708.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,152.72 : 78,228.72 = 12,708.96 : x
2. Step 2: Convert to fraction form
   52,152.72/78,228.72 = 12,708.96/x
3. Step 3: Cross multiply
   52,152.72x = 78,228.72 × 12,708.96
4. Step 4: Simplify right side
   52,152.72x = 994,205,673.33
5. Step 5: Solve for x
   x = 994,205,673.33/52,152.72
6. Step 6: Final answer
   x = 19,063.35