Finding the Fourth Proportional to 37,690.25, 56,561.30 and 13,066.25

Step by Step Solution

1. Step 1: Write the proportion equation
   37,690.25 : 56,561.30 = 13,066.25 : x
2. Step 2: Convert to fraction form
   37,690.25/56,561.30 = 13,066.25/x
3. Step 3: Cross multiply
   37,690.25x = 56,561.30 × 13,066.25
4. Step 4: Simplify right side
   37,690.25x = 739,044,020.79
5. Step 5: Solve for x
   x = 739,044,020.79/37,690.25
6. Step 6: Final answer
   x = 19,608.36