Finding the Fourth Proportional to 10,047.42, 13,866.15 and 5,571.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.42 : 13,866.15 = 5,571.60 : x
2. Step 2: Convert to fraction form
   10,047.42/13,866.15 = 5,571.60/x
3. Step 3: Cross multiply
   10,047.42x = 13,866.15 × 5,571.60
4. Step 4: Simplify right side
   10,047.42x = 77,256,641.34
5. Step 5: Solve for x
   x = 77,256,641.34/10,047.42
6. Step 6: Final answer
   x = 7,689.20