Finding the Fourth Proportional to 19,925.30, 29,889.79 and 5,134.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,925.30 : 29,889.79 = 5,134.28 : x
2. Step 2: Convert to fraction form
   19,925.30/29,889.79 = 5,134.28/x
3. Step 3: Cross multiply
   19,925.30x = 29,889.79 × 5,134.28
4. Step 4: Simplify right side
   19,925.30x = 153,462,388.72
5. Step 5: Solve for x
   x = 153,462,388.72/19,925.30
6. Step 6: Final answer
   x = 7,701.89