Finding the Fourth Proportional to 9,519,404.31, 13,136,702.72 and 5,168,402.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,519,404.31 : 13,136,702.72 = 5,168,402.51 : x
2. Step 2: Convert to fraction form
   9,519,404.31/13,136,702.72 = 5,168,402.51/x
3. Step 3: Cross multiply
   9,519,404.31x = 13,136,702.72 × 5,168,402.51
4. Step 4: Simplify right side
   9,519,404.31x = 67,895,767,219,646.30
5. Step 5: Solve for x
   x = 67,895,767,219,646.30/9,519,404.31
6. Step 6: Final answer
   x = 7,132,354.61