Finding the Fourth Proportional to 10,873.35, 14,971.86 and 9,521.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,873.35 : 14,971.86 = 9,521.23 : x
2. Step 2: Convert to fraction form
   10,873.35/14,971.86 = 9,521.23/x
3. Step 3: Cross multiply
   10,873.35x = 14,971.86 × 9,521.23
4. Step 4: Simplify right side
   10,873.35x = 142,550,485.16
5. Step 5: Solve for x
   x = 142,550,485.16/10,873.35
6. Step 6: Final answer
   x = 13,110.08