Finding the Fourth Proportional to 12,733.30, 17,570.82 and 7,428.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,733.30 : 17,570.82 = 7,428.58 : x
2. Step 2: Convert to fraction form
   12,733.30/17,570.82 = 7,428.58/x
3. Step 3: Cross multiply
   12,733.30x = 17,570.82 × 7,428.58
4. Step 4: Simplify right side
   12,733.30x = 130,526,242.04
5. Step 5: Solve for x
   x = 130,526,242.04/12,733.30
6. Step 6: Final answer
   x = 10,250.78