Finding the Fourth Proportional to 12,970.23, 17,930.72 and 12,851.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.23 : 17,930.72 = 12,851.76 : x
2. Step 2: Convert to fraction form
   12,970.23/17,930.72 = 12,851.76/x
3. Step 3: Cross multiply
   12,970.23x = 17,930.72 × 12,851.76
4. Step 4: Simplify right side
   12,970.23x = 230,441,337.15
5. Step 5: Solve for x
   x = 230,441,337.15/12,970.23
6. Step 6: Final answer
   x = 17,766.95