Finding the Fourth Proportional to 8,430.24, 12,638.52 and 7,507.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,430.24 : 12,638.52 = 7,507.59 : x
2. Step 2: Convert to fraction form
   8,430.24/12,638.52 = 7,507.59/x
3. Step 3: Cross multiply
   8,430.24x = 12,638.52 × 7,507.59
4. Step 4: Simplify right side
   8,430.24x = 94,884,826.37
5. Step 5: Solve for x
   x = 94,884,826.37/8,430.24
6. Step 6: Final answer
   x = 11,255.29