Finding the Fourth Proportional to 18,307.69, 27,457.89 and 5,156.53

Step by Step Solution

1. Step 1: Write the proportion equation
   18,307.69 : 27,457.89 = 5,156.53 : x
2. Step 2: Convert to fraction form
   18,307.69/27,457.89 = 5,156.53/x
3. Step 3: Cross multiply
   18,307.69x = 27,457.89 × 5,156.53
4. Step 4: Simplify right side
   18,307.69x = 141,587,433.52
5. Step 5: Solve for x
   x = 141,587,433.52/18,307.69
6. Step 6: Final answer
   x = 7,733.77