Finding the Fourth Proportional to 12,800.52, 19,203.40 and 7,256.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,800.52 : 19,203.40 = 7,256.34 : x
2. Step 2: Convert to fraction form
   12,800.52/19,203.40 = 7,256.34/x
3. Step 3: Cross multiply
   12,800.52x = 19,203.40 × 7,256.34
4. Step 4: Simplify right side
   12,800.52x = 139,346,399.56
5. Step 5: Solve for x
   x = 139,346,399.56/12,800.52
6. Step 6: Final answer
   x = 10,886.00