Finding the Fourth Proportional to 13,339.02, 20,014.42 and 7,097.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,339.02 : 20,014.42 = 7,097.57 : x
2. Step 2: Convert to fraction form
   13,339.02/20,014.42 = 7,097.57/x
3. Step 3: Cross multiply
   13,339.02x = 20,014.42 × 7,097.57
4. Step 4: Simplify right side
   13,339.02x = 142,053,746.96
5. Step 5: Solve for x
   x = 142,053,746.96/13,339.02
6. Step 6: Final answer
   x = 10,649.49