Finding the Fourth Proportional to 39,390.49, 59,066.01 and 13,086.01

Step by Step Solution

1. Step 1: Write the proportion equation
   39,390.49 : 59,066.01 = 13,086.01 : x
2. Step 2: Convert to fraction form
   39,390.49/59,066.01 = 13,086.01/x
3. Step 3: Cross multiply
   39,390.49x = 59,066.01 × 13,086.01
4. Step 4: Simplify right side
   39,390.49x = 772,938,397.52
5. Step 5: Solve for x
   x = 772,938,397.52/39,390.49
6. Step 6: Final answer
   x = 19,622.46