Finding the Fourth Proportional to 13,066.10, 18,031.35 and 7,097.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.10 : 18,031.35 = 7,097.78 : x
2. Step 2: Convert to fraction form
   13,066.10/18,031.35 = 7,097.78/x
3. Step 3: Cross multiply
   13,066.10x = 18,031.35 × 7,097.78
4. Step 4: Simplify right side
   13,066.10x = 127,982,555.40
5. Step 5: Solve for x
   x = 127,982,555.40/13,066.10
6. Step 6: Final answer
   x = 9,795.01