Finding the Fourth Proportional to 13,401,968.86, 18,494,703.02 and 7,290,382.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401,968.86 : 18,494,703.02 = 7,290,382.78 : x
2. Step 2: Convert to fraction form
   13,401,968.86/18,494,703.02 = 7,290,382.78/x
3. Step 3: Cross multiply
   13,401,968.86x = 18,494,703.02 × 7,290,382.78
4. Step 4: Simplify right side
   13,401,968.86x = 134,833,464,418,222
5. Step 5: Solve for x
   x = 134,833,464,418,222/13,401,968.86
6. Step 6: Final answer
   x = 10,060,720.62