Finding the Fourth Proportional to 39,457.74, 59,196.18 and 13,164.54

Step by Step Solution

1. Step 1: Write the proportion equation
   39,457.74 : 59,196.18 = 13,164.54 : x
2. Step 2: Convert to fraction form
   39,457.74/59,196.18 = 13,164.54/x
3. Step 3: Cross multiply
   39,457.74x = 59,196.18 × 13,164.54
4. Step 4: Simplify right side
   39,457.74x = 779,290,479.46
5. Step 5: Solve for x
   x = 779,290,479.46/39,457.74
6. Step 6: Final answer
   x = 19,750.00