Finding the Fourth Proportional to 12,621.42, 17,416.53 and 7,316.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,621.42 : 17,416.53 = 7,316.58 : x
2. Step 2: Convert to fraction form
   12,621.42/17,416.53 = 7,316.58/x
3. Step 3: Cross multiply
   12,621.42x = 17,416.53 × 7,316.58
4. Step 4: Simplify right side
   12,621.42x = 127,429,435.07
5. Step 5: Solve for x
   x = 127,429,435.07/12,621.42
6. Step 6: Final answer
   x = 10,096.28