Finding the Fourth Proportional to 39,993.35, 59,993.06 and 13,697.91

Step by Step Solution

1. Step 1: Write the proportion equation
   39,993.35 : 59,993.06 = 13,697.91 : x
2. Step 2: Convert to fraction form
   39,993.35/59,993.06 = 13,697.91/x
3. Step 3: Cross multiply
   39,993.35x = 59,993.06 × 13,697.91
4. Step 4: Simplify right side
   39,993.35x = 821,779,468.02
5. Step 5: Solve for x
   x = 821,779,468.02/39,993.35
6. Step 6: Final answer
   x = 20,547.91