Finding the Fourth Proportional to 39,667.16, 59,502.72 and 13,010.79

Step by Step Solution

1. Step 1: Write the proportion equation
   39,667.16 : 59,502.72 = 13,010.79 : x
2. Step 2: Convert to fraction form
   39,667.16/59,502.72 = 13,010.79/x
3. Step 3: Cross multiply
   39,667.16x = 59,502.72 × 13,010.79
4. Step 4: Simplify right side
   39,667.16x = 774,177,394.35
5. Step 5: Solve for x
   x = 774,177,394.35/39,667.16
6. Step 6: Final answer
   x = 19,516.83