Finding the Fourth Proportional to 12,621.88, 17,417.92 and 7,316.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,621.88 : 17,417.92 = 7,316.56 : x
2. Step 2: Convert to fraction form
   12,621.88/17,417.92 = 7,316.56/x
3. Step 3: Cross multiply
   12,621.88x = 17,417.92 × 7,316.56
4. Step 4: Simplify right side
   12,621.88x = 127,439,256.76
5. Step 5: Solve for x
   x = 127,439,256.76/12,621.88
6. Step 6: Final answer
   x = 10,096.69