Finding the Fourth Proportional to 37,724, 52,059.12 and 20,957.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,724 : 52,059.12 = 20,957.12 : x
2. Step 2: Convert to fraction form
   37,724/52,059.12 = 20,957.12/x
3. Step 3: Cross multiply
   37,724x = 52,059.12 × 20,957.12
4. Step 4: Simplify right side
   37,724x = 1,091,009,224.93
5. Step 5: Solve for x
   x = 1,091,009,224.93/37,724
6. Step 6: Final answer
   x = 28,920.83