Finding the Fourth Proportional to 10,690.35, 14,728.52 and 7,457.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,690.35 : 14,728.52 = 7,457.06 : x
2. Step 2: Convert to fraction form
   10,690.35/14,728.52 = 7,457.06/x
3. Step 3: Cross multiply
   10,690.35x = 14,728.52 × 7,457.06
4. Step 4: Simplify right side
   10,690.35x = 109,831,346.42
5. Step 5: Solve for x
   x = 109,831,346.42/10,690.35
6. Step 6: Final answer
   x = 10,273.88