Finding the Fourth Proportional to 12,436.52, 17,164.04 and 7,130.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.52 : 17,164.04 = 7,130.30 : x
2. Step 2: Convert to fraction form
   12,436.52/17,164.04 = 7,130.30/x
3. Step 3: Cross multiply
   12,436.52x = 17,164.04 × 7,130.30
4. Step 4: Simplify right side
   12,436.52x = 122,384,718.76
5. Step 5: Solve for x
   x = 122,384,718.76/12,436.52
6. Step 6: Final answer
   x = 9,840.75