Finding the Fourth Proportional to 21,710.12, 32,567.88 and 7,667.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,710.12 : 32,567.88 = 7,667.30 : x
2. Step 2: Convert to fraction form
   21,710.12/32,567.88 = 7,667.30/x
3. Step 3: Cross multiply
   21,710.12x = 32,567.88 × 7,667.30
4. Step 4: Simplify right side
   21,710.12x = 249,707,706.32
5. Step 5: Solve for x
   x = 249,707,706.32/21,710.12
6. Step 6: Final answer
   x = 11,501.90