Finding the Fourth Proportional to 35,145.68, 52,710.22 and 12,947

Step by Step Solution

1. Step 1: Write the proportion equation
   35,145.68 : 52,710.22 = 12,947 : x
2. Step 2: Convert to fraction form
   35,145.68/52,710.22 = 12,947/x
3. Step 3: Cross multiply
   35,145.68x = 52,710.22 × 12,947
4. Step 4: Simplify right side
   35,145.68x = 682,439,218.34
5. Step 5: Solve for x
   x = 682,439,218.34/35,145.68
6. Step 6: Final answer
   x = 19,417.44