Finding the Fourth Proportional to 19,128,200.10, 28,692,300.15 and 18,384,182.70

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128,200.10 : 28,692,300.15 = 18,384,182.70 : x
2. Step 2: Convert to fraction form
   19,128,200.10/28,692,300.15 = 18,384,182.70/x
3. Step 3: Cross multiply
   19,128,200.10x = 28,692,300.15 × 18,384,182.70
4. Step 4: Simplify right side
   19,128,200.10x = 527,484,488,040,837.38
5. Step 5: Solve for x
   x = 527,484,488,040,837.38/19,128,200.10
6. Step 6: Final answer
   x = 27,576,274.05