Finding the Fourth Proportional to 12,970.35, 19,424.34 and 7,406.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.35 : 19,424.34 = 7,406.83 : x
2. Step 2: Convert to fraction form
   12,970.35/19,424.34 = 7,406.83/x
3. Step 3: Cross multiply
   12,970.35x = 19,424.34 × 7,406.83
4. Step 4: Simplify right side
   12,970.35x = 143,872,784.24
5. Step 5: Solve for x
   x = 143,872,784.24/12,970.35
6. Step 6: Final answer
   x = 11,092.44