Finding the Fourth Proportional to 27,870.47, 41,817.96 and 13,078.12

Step by Step Solution

1. Step 1: Write the proportion equation
   27,870.47 : 41,817.96 = 13,078.12 : x
2. Step 2: Convert to fraction form
   27,870.47/41,817.96 = 13,078.12/x
3. Step 3: Cross multiply
   27,870.47x = 41,817.96 × 13,078.12
4. Step 4: Simplify right side
   27,870.47x = 546,900,024.55
5. Step 5: Solve for x
   x = 546,900,024.55/27,870.47
6. Step 6: Final answer
   x = 19,622.92