Finding the Fourth Proportional to 13,074.78, 19,580.64 and 7,511.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,074.78 : 19,580.64 = 7,511.22 : x
2. Step 2: Convert to fraction form
   13,074.78/19,580.64 = 7,511.22/x
3. Step 3: Cross multiply
   13,074.78x = 19,580.64 × 7,511.22
4. Step 4: Simplify right side
   13,074.78x = 147,074,494.78
5. Step 5: Solve for x
   x = 147,074,494.78/13,074.78
6. Step 6: Final answer
   x = 11,248.72