Finding the Fourth Proportional to 12,131.84, 18,189.76 and 4,737.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.84 : 18,189.76 = 4,737.12 : x
2. Step 2: Convert to fraction form
   12,131.84/18,189.76 = 4,737.12/x
3. Step 3: Cross multiply
   12,131.84x = 18,189.76 × 4,737.12
4. Step 4: Simplify right side
   12,131.84x = 86,167,075.89
5. Step 5: Solve for x
   x = 86,167,075.89/12,131.84
6. Step 6: Final answer
   x = 7,102.56