Finding the Fourth Proportional to 11,983.86, 17,969.31 and 5,056.74

Step by Step Solution

1. Step 1: Write the proportion equation
   11,983.86 : 17,969.31 = 5,056.74 : x
2. Step 2: Convert to fraction form
   11,983.86/17,969.31 = 5,056.74/x
3. Step 3: Cross multiply
   11,983.86x = 17,969.31 × 5,056.74
4. Step 4: Simplify right side
   11,983.86x = 90,866,128.65
5. Step 5: Solve for x
   x = 90,866,128.65/11,983.86
6. Step 6: Final answer
   x = 7,582.38