Finding the Fourth Proportional to 52,441.02, 78,660.72 and 12,997.87

Step by Step Solution

1. Step 1: Write the proportion equation
   52,441.02 : 78,660.72 = 12,997.87 : x
2. Step 2: Convert to fraction form
   52,441.02/78,660.72 = 12,997.87/x
3. Step 3: Cross multiply
   52,441.02x = 78,660.72 × 12,997.87
4. Step 4: Simplify right side
   52,441.02x = 1,022,421,616.01
5. Step 5: Solve for x
   x = 1,022,421,616.01/52,441.02
6. Step 6: Final answer
   x = 19,496.60