Finding the Fourth Proportional to 12,807.72, 17,667.54 and 7,501.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.72 : 17,667.54 = 7,501.50 : x
2. Step 2: Convert to fraction form
   12,807.72/17,667.54 = 7,501.50/x
3. Step 3: Cross multiply
   12,807.72x = 17,667.54 × 7,501.50
4. Step 4: Simplify right side
   12,807.72x = 132,533,051.31
5. Step 5: Solve for x
   x = 132,533,051.31/12,807.72
6. Step 6: Final answer
   x = 10,347.90