Finding the Fourth Proportional to 19,077,123.70, 28,615,858.54 and 5,430,264.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,077,123.70 : 28,615,858.54 = 5,430,264.72 : x
2. Step 2: Convert to fraction form
   19,077,123.70/28,615,858.54 = 5,430,264.72/x
3. Step 3: Cross multiply
   19,077,123.70x = 28,615,858.54 × 5,430,264.72
4. Step 4: Simplify right side
   19,077,123.70x = 155,391,687,062,272.69
5. Step 5: Solve for x
   x = 155,391,687,062,272.69/19,077,123.70
6. Step 6: Final answer
   x = 8,145,446.32