Finding the Fourth Proportional to 10,109.81, 15,219.32 and 9,092.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.81 : 15,219.32 = 9,092.60 : x
2. Step 2: Convert to fraction form
   10,109.81/15,219.32 = 9,092.60/x
3. Step 3: Cross multiply
   10,109.81x = 15,219.32 × 9,092.60
4. Step 4: Simplify right side
   10,109.81x = 138,383,181.62
5. Step 5: Solve for x
   x = 138,383,181.62/10,109.81
6. Step 6: Final answer
   x = 13,688.01