Finding the Fourth Proportional to 12,870.73, 17,693.30 and 11,071.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.73 : 17,693.30 = 11,071.62 : x
2. Step 2: Convert to fraction form
   12,870.73/17,693.30 = 11,071.62/x
3. Step 3: Cross multiply
   12,870.73x = 17,693.30 × 11,071.62
4. Step 4: Simplify right side
   12,870.73x = 195,893,521.83
5. Step 5: Solve for x
   x = 195,893,521.83/12,870.73
6. Step 6: Final answer
   x = 15,220.08