Finding the Fourth Proportional to 30,488.08, 42,061.68 and 19,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,488.08 : 42,061.68 = 19,152.72 : x
2. Step 2: Convert to fraction form
   30,488.08/42,061.68 = 19,152.72/x
3. Step 3: Cross multiply
   30,488.08x = 42,061.68 × 19,152.72
4. Step 4: Simplify right side
   30,488.08x = 805,595,579.77
5. Step 5: Solve for x
   x = 805,595,579.77/30,488.08
6. Step 6: Final answer
   x = 26,423.30