Finding the Fourth Proportional to 10,381.74, 15,574.66 and 3,807.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,381.74 : 15,574.66 = 3,807.98 : x
2. Step 2: Convert to fraction form
   10,381.74/15,574.66 = 3,807.98/x
3. Step 3: Cross multiply
   10,381.74x = 15,574.66 × 3,807.98
4. Step 4: Simplify right side
   10,381.74x = 59,308,037.48
5. Step 5: Solve for x
   x = 59,308,037.48/10,381.74
6. Step 6: Final answer
   x = 5,712.73