Finding the Fourth Proportional to 13,012.32, 17,956.56 and 7,422.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.32 : 17,956.56 = 7,422.24 : x
2. Step 2: Convert to fraction form
   13,012.32/17,956.56 = 7,422.24/x
3. Step 3: Cross multiply
   13,012.32x = 17,956.56 × 7,422.24
4. Step 4: Simplify right side
   13,012.32x = 133,277,897.89
5. Step 5: Solve for x
   x = 133,277,897.89/13,012.32
6. Step 6: Final answer
   x = 10,242.44