Finding the Fourth Proportional to 12,667.59, 19,023.30 and 7,766.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.59 : 19,023.30 = 7,766.01 : x
2. Step 2: Convert to fraction form
   12,667.59/19,023.30 = 7,766.01/x
3. Step 3: Cross multiply
   12,667.59x = 19,023.30 × 7,766.01
4. Step 4: Simplify right side
   12,667.59x = 147,735,138.03
5. Step 5: Solve for x
   x = 147,735,138.03/12,667.59
6. Step 6: Final answer
   x = 11,662.45