Finding the Fourth Proportional to 37,434.32, 51,659.54 and 20,438.91

Step by Step Solution

1. Step 1: Write the proportion equation
   37,434.32 : 51,659.54 = 20,438.91 : x
2. Step 2: Convert to fraction form
   37,434.32/51,659.54 = 20,438.91/x
3. Step 3: Cross multiply
   37,434.32x = 51,659.54 × 20,438.91
4. Step 4: Simplify right side
   37,434.32x = 1,055,864,663.15
5. Step 5: Solve for x
   x = 1,055,864,663.15/37,434.32
6. Step 6: Final answer
   x = 28,205.79