Finding the Fourth Proportional to 12,926.80, 19,389.42 and 4,606.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926.80 : 19,389.42 = 4,606.37 : x
2. Step 2: Convert to fraction form
   12,926.80/19,389.42 = 4,606.37/x
3. Step 3: Cross multiply
   12,926.80x = 19,389.42 × 4,606.37
4. Step 4: Simplify right side
   12,926.80x = 89,314,842.61
5. Step 5: Solve for x
   x = 89,314,842.61/12,926.80
6. Step 6: Final answer
   x = 6,909.28