Finding the Fourth Proportional to 9,782,111.38, 13,499,735.31 and 5,431,197.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,782,111.38 : 13,499,735.31 = 5,431,197.90 : x
2. Step 2: Convert to fraction form
   9,782,111.38/13,499,735.31 = 5,431,197.90/x
3. Step 3: Cross multiply
   9,782,111.38x = 13,499,735.31 × 5,431,197.90
4. Step 4: Simplify right side
   9,782,111.38x = 73,319,734,066,227.86
5. Step 5: Solve for x
   x = 73,319,734,066,227.86/9,782,111.38
6. Step 6: Final answer
   x = 7,495,287.18