Finding the Fourth Proportional to 12,342.05, 17,031.61 and 7,038.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,342.05 : 17,031.61 = 7,038.58 : x
2. Step 2: Convert to fraction form
   12,342.05/17,031.61 = 7,038.58/x
3. Step 3: Cross multiply
   12,342.05x = 17,031.61 × 7,038.58
4. Step 4: Simplify right side
   12,342.05x = 119,878,289.34
5. Step 5: Solve for x
   x = 119,878,289.34/12,342.05
6. Step 6: Final answer
   x = 9,712.99