Finding the Fourth Proportional to 10,071,309.89, 15,111,430.16 and 5,277,859.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,071,309.89 : 15,111,430.16 = 5,277,859.49 : x
2. Step 2: Convert to fraction form
   10,071,309.89/15,111,430.16 = 5,277,859.49/x
3. Step 3: Cross multiply
   10,071,309.89x = 15,111,430.16 × 5,277,859.49
4. Step 4: Simplify right side
   10,071,309.89x = 79,756,004,975,481.77
5. Step 5: Solve for x
   x = 79,756,004,975,481.77/10,071,309.89
6. Step 6: Final answer
   x = 7,919,129.28