Finding the Fourth Proportional to 11,869.86, 17,803.51 and 3,971.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,869.86 : 17,803.51 = 3,971.48 : x
2. Step 2: Convert to fraction form
   11,869.86/17,803.51 = 3,971.48/x
3. Step 3: Cross multiply
   11,869.86x = 17,803.51 × 3,971.48
4. Step 4: Simplify right side
   11,869.86x = 70,706,283.89
5. Step 5: Solve for x
   x = 70,706,283.89/11,869.86
6. Step 6: Final answer
   x = 5,956.79