Finding the Fourth Proportional to 12,958.77, 19,426.28 and 4,636.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,958.77 : 19,426.28 = 4,636.83 : x
2. Step 2: Convert to fraction form
   12,958.77/19,426.28 = 4,636.83/x
3. Step 3: Cross multiply
   12,958.77x = 19,426.28 × 4,636.83
4. Step 4: Simplify right side
   12,958.77x = 90,076,334.71
5. Step 5: Solve for x
   x = 90,076,334.71/12,958.77
6. Step 6: Final answer
   x = 6,950.99