Finding the Fourth Proportional to 10,129.22, 15,196.40 and 3,109.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,129.22 : 15,196.40 = 3,109.59 : x
2. Step 2: Convert to fraction form
   10,129.22/15,196.40 = 3,109.59/x
3. Step 3: Cross multiply
   10,129.22x = 15,196.40 × 3,109.59
4. Step 4: Simplify right side
   10,129.22x = 47,254,592.25
5. Step 5: Solve for x
   x = 47,254,592.25/10,129.22
6. Step 6: Final answer
   x = 4,665.18