Finding the Fourth Proportional to 12,384, 17,090.52 and 7,347.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384 : 17,090.52 = 7,347.12 : x
2. Step 2: Convert to fraction form
   12,384/17,090.52 = 7,347.12/x
3. Step 3: Cross multiply
   12,384x = 17,090.52 × 7,347.12
4. Step 4: Simplify right side
   12,384x = 125,566,101.30
5. Step 5: Solve for x
   x = 125,566,101.30/12,384
6. Step 6: Final answer
   x = 10,139.38