Finding the Fourth Proportional to 39,290, 58,856.16 and 19,508.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,290 : 58,856.16 = 19,508.72 : x
2. Step 2: Convert to fraction form
   39,290/58,856.16 = 19,508.72/x
3. Step 3: Cross multiply
   39,290x = 58,856.16 × 19,508.72
4. Step 4: Simplify right side
   39,290x = 1,148,208,345.72
5. Step 5: Solve for x
   x = 1,148,208,345.72/39,290
6. Step 6: Final answer
   x = 29,223.93