Finding the Fourth Proportional to 39,870.81, 59,772.29 and 17,672.09

Step by Step Solution

1. Step 1: Write the proportion equation
   39,870.81 : 59,772.29 = 17,672.09 : x
2. Step 2: Convert to fraction form
   39,870.81/59,772.29 = 17,672.09/x
3. Step 3: Cross multiply
   39,870.81x = 59,772.29 × 17,672.09
4. Step 4: Simplify right side
   39,870.81x = 1,056,300,901.16
5. Step 5: Solve for x
   x = 1,056,300,901.16/39,870.81
6. Step 6: Final answer
   x = 26,493.09