Finding the Fourth Proportional to 10,855, 14,992.86 and 7,312.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855 : 14,992.86 = 7,312.06 : x
2. Step 2: Convert to fraction form
   10,855/14,992.86 = 7,312.06/x
3. Step 3: Cross multiply
   10,855x = 14,992.86 × 7,312.06
4. Step 4: Simplify right side
   10,855x = 109,628,691.89
5. Step 5: Solve for x
   x = 109,628,691.89/10,855
6. Step 6: Final answer
   x = 10,099.37