Finding the Fourth Proportional to 35,131.47, 52,718.00 and 12,960.43

Step by Step Solution

1. Step 1: Write the proportion equation
   35,131.47 : 52,718.00 = 12,960.43 : x
2. Step 2: Convert to fraction form
   35,131.47/52,718.00 = 12,960.43/x
3. Step 3: Cross multiply
   35,131.47x = 52,718.00 × 12,960.43
4. Step 4: Simplify right side
   35,131.47x = 683,247,883.94
5. Step 5: Solve for x
   x = 683,247,883.94/35,131.47
6. Step 6: Final answer
   x = 19,448.31