Finding the Fourth Proportional to 15,659.74, 23,492.94 and 5,128.99

Step by Step Solution

1. Step 1: Write the proportion equation
   15,659.74 : 23,492.94 = 5,128.99 : x
2. Step 2: Convert to fraction form
   15,659.74/23,492.94 = 5,128.99/x
3. Step 3: Cross multiply
   15,659.74x = 23,492.94 × 5,128.99
4. Step 4: Simplify right side
   15,659.74x = 120,495,054.33
5. Step 5: Solve for x
   x = 120,495,054.33/15,659.74
6. Step 6: Final answer
   x = 7,694.58