Finding the Fourth Proportional to 10,012.10, 14,982.15 and 7,420.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012.10 : 14,982.15 = 7,420.10 : x
2. Step 2: Convert to fraction form
   10,012.10/14,982.15 = 7,420.10/x
3. Step 3: Cross multiply
   10,012.10x = 14,982.15 × 7,420.10
4. Step 4: Simplify right side
   10,012.10x = 111,169,051.22
5. Step 5: Solve for x
   x = 111,169,051.22/10,012.10
6. Step 6: Final answer
   x = 11,103.47