Finding the Fourth Proportional to 52,259.02, 78,390.02 and 12,816.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,259.02 : 78,390.02 = 12,816.10 : x
2. Step 2: Convert to fraction form
   52,259.02/78,390.02 = 12,816.10/x
3. Step 3: Cross multiply
   52,259.02x = 78,390.02 × 12,816.10
4. Step 4: Simplify right side
   52,259.02x = 1,004,654,335.32
5. Step 5: Solve for x
   x = 1,004,654,335.32/52,259.02
6. Step 6: Final answer
   x = 19,224.52