Finding the Fourth Proportional to 12,957.57, 19,436.00 and 9,064.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,957.57 : 19,436.00 = 9,064.53 : x
2. Step 2: Convert to fraction form
   12,957.57/19,436.00 = 9,064.53/x
3. Step 3: Cross multiply
   12,957.57x = 19,436.00 × 9,064.53
4. Step 4: Simplify right side
   12,957.57x = 176,178,159.76
5. Step 5: Solve for x
   x = 176,178,159.76/12,957.57
6. Step 6: Final answer
   x = 13,596.54