Finding the Fourth Proportional to 8,926.70, 12,298.84 and 7,485.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,926.70 : 12,298.84 = 7,485.10 : x
2. Step 2: Convert to fraction form
   8,926.70/12,298.84 = 7,485.10/x
3. Step 3: Cross multiply
   8,926.70x = 12,298.84 × 7,485.10
4. Step 4: Simplify right side
   8,926.70x = 92,057,997.82
5. Step 5: Solve for x
   x = 92,057,997.82/8,926.70
6. Step 6: Final answer
   x = 10,312.66