Finding the Fourth Proportional to 19,917.42, 29,873.69 and 5,126.41

Step by Step Solution

1. Step 1: Write the proportion equation
   19,917.42 : 29,873.69 = 5,126.41 : x
2. Step 2: Convert to fraction form
   19,917.42/29,873.69 = 5,126.41/x
3. Step 3: Cross multiply
   19,917.42x = 29,873.69 × 5,126.41
4. Step 4: Simplify right side
   19,917.42x = 153,144,783.15
5. Step 5: Solve for x
   x = 153,144,783.15/19,917.42
6. Step 6: Final answer
   x = 7,688.99