Finding the Fourth Proportional to 52,308.94, 78,462.73 and 12,866.39

Step by Step Solution

1. Step 1: Write the proportion equation
   52,308.94 : 78,462.73 = 12,866.39 : x
2. Step 2: Convert to fraction form
   52,308.94/78,462.73 = 12,866.39/x
3. Step 3: Cross multiply
   52,308.94x = 78,462.73 × 12,866.39
4. Step 4: Simplify right side
   52,308.94x = 1,009,532,371.63
5. Step 5: Solve for x
   x = 1,009,532,371.63/52,308.94
6. Step 6: Final answer
   x = 19,299.42