Finding the Fourth Proportional to 19,619.55, 27,075.50 and 10,667.67

Step by Step Solution

1. Step 1: Write the proportion equation
   19,619.55 : 27,075.50 = 10,667.67 : x
2. Step 2: Convert to fraction form
   19,619.55/27,075.50 = 10,667.67/x
3. Step 3: Cross multiply
   19,619.55x = 27,075.50 × 10,667.67
4. Step 4: Simplify right side
   19,619.55x = 288,832,499.09
5. Step 5: Solve for x
   x = 288,832,499.09/19,619.55
6. Step 6: Final answer
   x = 14,721.67