Finding the Fourth Proportional to 13,953.72, 19,256.14 and 7,666.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,953.72 : 19,256.14 = 7,666.10 : x
2. Step 2: Convert to fraction form
   13,953.72/19,256.14 = 7,666.10/x
3. Step 3: Cross multiply
   13,953.72x = 19,256.14 × 7,666.10
4. Step 4: Simplify right side
   13,953.72x = 147,619,494.85
5. Step 5: Solve for x
   x = 147,619,494.85/13,953.72
6. Step 6: Final answer
   x = 10,579.22