Finding the Fourth Proportional to 12,880,573.98, 17,790,781.59 and 9,390,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,880,573.98 : 17,790,781.59 = 9,390,385.50 : x
2. Step 2: Convert to fraction form
   12,880,573.98/17,790,781.59 = 9,390,385.50/x
3. Step 3: Cross multiply
   12,880,573.98x = 17,790,781.59 × 9,390,385.50
4. Step 4: Simplify right side
   12,880,573.98x = 167,062,297,476,402.94
5. Step 5: Solve for x
   x = 167,062,297,476,402.94/12,880,573.98
6. Step 6: Final answer
   x = 12,970,097.27