Finding the Fourth Proportional to 12,748.17, 19,123.47 and 4,957.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.17 : 19,123.47 = 4,957.59 : x
2. Step 2: Convert to fraction form
   12,748.17/19,123.47 = 4,957.59/x
3. Step 3: Cross multiply
   12,748.17x = 19,123.47 × 4,957.59
4. Step 4: Simplify right side
   12,748.17x = 94,806,323.64
5. Step 5: Solve for x
   x = 94,806,323.64/12,748.17
6. Step 6: Final answer
   x = 7,436.86