Finding the Fourth Proportional to 12,159.01, 18,225.15 and 4,762.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,159.01 : 18,225.15 = 4,762.09 : x
2. Step 2: Convert to fraction form
   12,159.01/18,225.15 = 4,762.09/x
3. Step 3: Cross multiply
   12,159.01x = 18,225.15 × 4,762.09
4. Step 4: Simplify right side
   12,159.01x = 86,789,804.56
5. Step 5: Solve for x
   x = 86,789,804.56/12,159.01
6. Step 6: Final answer
   x = 7,137.90