Finding the Fourth Proportional to 12,967.63, 19,420.27 and 7,404.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,967.63 : 19,420.27 = 7,404.11 : x
2. Step 2: Convert to fraction form
   12,967.63/19,420.27 = 7,404.11/x
3. Step 3: Cross multiply
   12,967.63x = 19,420.27 × 7,404.11
4. Step 4: Simplify right side
   12,967.63x = 143,789,772.52
5. Step 5: Solve for x
   x = 143,789,772.52/12,967.63
6. Step 6: Final answer
   x = 11,088.36