Finding the Fourth Proportional to 19,039.04, 28,558.52 and 5,188

Step by Step Solution

1. Step 1: Write the proportion equation
   19,039.04 : 28,558.52 = 5,188 : x
2. Step 2: Convert to fraction form
   19,039.04/28,558.52 = 5,188/x
3. Step 3: Cross multiply
   19,039.04x = 28,558.52 × 5,188
4. Step 4: Simplify right side
   19,039.04x = 148,161,601.76
5. Step 5: Solve for x
   x = 148,161,601.76/19,039.04
6. Step 6: Final answer
   x = 7,781.99