Finding the Fourth Proportional to 11,870.47, 17,803.68 and 3,972.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.47 : 17,803.68 = 3,972.43 : x
2. Step 2: Convert to fraction form
   11,870.47/17,803.68 = 3,972.43/x
3. Step 3: Cross multiply
   11,870.47x = 17,803.68 × 3,972.43
4. Step 4: Simplify right side
   11,870.47x = 70,723,872.54
5. Step 5: Solve for x
   x = 70,723,872.54/11,870.47
6. Step 6: Final answer
   x = 5,957.97