Finding the Fourth Proportional to 52,384.52, 78,574.73 and 12,940.63

Step by Step Solution

1. Step 1: Write the proportion equation
   52,384.52 : 78,574.73 = 12,940.63 : x
2. Step 2: Convert to fraction form
   52,384.52/78,574.73 = 12,940.63/x
3. Step 3: Cross multiply
   52,384.52x = 78,574.73 × 12,940.63
4. Step 4: Simplify right side
   52,384.52x = 1,016,806,247.14
5. Step 5: Solve for x
   x = 1,016,806,247.14/52,384.52
6. Step 6: Final answer
   x = 19,410.43