Finding the Fourth Proportional to 7,667.28, 10,601.55 and 7,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,667.28 : 10,601.55 = 7,312.50 : x
2. Step 2: Convert to fraction form
   7,667.28/10,601.55 = 7,312.50/x
3. Step 3: Cross multiply
   7,667.28x = 10,601.55 × 7,312.50
4. Step 4: Simplify right side
   7,667.28x = 77,523,834.38
5. Step 5: Solve for x
   x = 77,523,834.38/7,667.28
6. Step 6: Final answer
   x = 10,111.00