Finding the Fourth Proportional to 10,128.51, 13,976.73 and 5,652.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,128.51 : 13,976.73 = 5,652.05 : x
2. Step 2: Convert to fraction form
   10,128.51/13,976.73 = 5,652.05/x
3. Step 3: Cross multiply
   10,128.51x = 13,976.73 × 5,652.05
4. Step 4: Simplify right side
   10,128.51x = 78,997,106.91
5. Step 5: Solve for x
   x = 78,997,106.91/10,128.51
6. Step 6: Final answer
   x = 7,799.48