Finding the Fourth Proportional to 10,117.56, 13,973.04 and 9,018.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,117.56 : 13,973.04 = 9,018.12 : x
2. Step 2: Convert to fraction form
   10,117.56/13,973.04 = 9,018.12/x
3. Step 3: Cross multiply
   10,117.56x = 13,973.04 × 9,018.12
4. Step 4: Simplify right side
   10,117.56x = 126,010,551.48
5. Step 5: Solve for x
   x = 126,010,551.48/10,117.56
6. Step 6: Final answer
   x = 12,454.64