Finding the Fourth Proportional to 13,196.10, 19,765.35 and 10,251.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.10 : 19,765.35 = 10,251.30 : x
2. Step 2: Convert to fraction form
   13,196.10/19,765.35 = 10,251.30/x
3. Step 3: Cross multiply
   13,196.10x = 19,765.35 × 10,251.30
4. Step 4: Simplify right side
   13,196.10x = 202,620,532.46
5. Step 5: Solve for x
   x = 202,620,532.46/13,196.10
6. Step 6: Final answer
   x = 15,354.58