Finding the Fourth Proportional to 10,643.98, 15,980.07 and 9,093.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,643.98 : 15,980.07 = 9,093.94 : x
2. Step 2: Convert to fraction form
   10,643.98/15,980.07 = 9,093.94/x
3. Step 3: Cross multiply
   10,643.98x = 15,980.07 × 9,093.94
4. Step 4: Simplify right side
   10,643.98x = 145,321,797.78
5. Step 5: Solve for x
   x = 145,321,797.78/10,643.98
6. Step 6: Final answer
   x = 13,652.96