Finding the Fourth Proportional to 10,054.47, 13,879.98 and 7,072.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,054.47 : 13,879.98 = 7,072.86 : x
2. Step 2: Convert to fraction form
   10,054.47/13,879.98 = 7,072.86/x
3. Step 3: Cross multiply
   10,054.47x = 13,879.98 × 7,072.86
4. Step 4: Simplify right side
   10,054.47x = 98,171,155.34
5. Step 5: Solve for x
   x = 98,171,155.34/10,054.47
6. Step 6: Final answer
   x = 9,763.93