Finding the Fourth Proportional to 37,911, 52,317.18 and 21,144

Step by Step Solution

1. Step 1: Write the proportion equation
   37,911 : 52,317.18 = 21,144 : x
2. Step 2: Convert to fraction form
   37,911/52,317.18 = 21,144/x
3. Step 3: Cross multiply
   37,911x = 52,317.18 × 21,144
4. Step 4: Simplify right side
   37,911x = 1,106,194,453.92
5. Step 5: Solve for x
   x = 1,106,194,453.92/37,911
6. Step 6: Final answer
   x = 29,178.72