Finding the Fourth Proportional to 13,003.12, 17,938.56 and 10,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.12 : 17,938.56 = 10,216.72 : x
2. Step 2: Convert to fraction form
   13,003.12/17,938.56 = 10,216.72/x
3. Step 3: Cross multiply
   13,003.12x = 17,938.56 × 10,216.72
4. Step 4: Simplify right side
   13,003.12x = 183,273,244.72
5. Step 5: Solve for x
   x = 183,273,244.72/13,003.12
6. Step 6: Final answer
   x = 14,094.56